Hotel Management System

import datetime
import getpass
def newbook():
    fopen =open('Details.txt','a')
    now=datetime.datetime.now()
    s= now.strftime("%d-%m-%Y  %I:%M:%S %p")
    fopen.write(s+'\n')
    name=raw_input("Enter the name: ")
    fopen.write(name+' ')
    address=raw_input("Enter the address: ")
    fopen.write(address+' ')
    contact=raw_input("Enter the contact no: ")
    fopen.write(contact+'\n\n')
    print "Details are added succesfully! :)"
    fopen.close()
def searchandview():
    custname=raw_input("Enter the name of the customer for which the details are to be found: ")
    fopen=open("Details.txt")
    for detail in fopen:
        if custname in detail:
            print ("Here are the details: \n"+detail)
        #print ("No results found! Try with the correct name.")
def deletebook():
    custname=raw_input("Enter the name of the customer for which the details are to be deleted : ")
    fopen=open("Details.txt","r+")
    output=list()
    for detail in fopen:
        if custname not in detail:
            output.append(detail)
    fopen.truncate()
    fopen.writelines(output)
    fopen.close()
def rate():
    print ("1. Single bed-200")
    print ("2. Double bed-400")
    print ("3. Couple suite-800")
    print ("4. King suite-1200")

while True:
    user=raw_input('Enter username: ')
    password=getpass.getpass("Enter Password: ")
    if user=='client' and password=="client123":
        break
    else:
        print "Incorrect username/password.Please try again."

while True:
    print "Welcome to the hotel management system".center(68,'-')
    print " 1.Enter new Booking. \n 2.View saved bookings.\n 3.Delete Booking.\n 4.View Rate.\n 5.Exit."
    inp=raw_input("Choose the correct option from above:-")
    if  inp=='1':
        newbook()
    elif inp=='2':
        searchandview()
    elif inp=='3':
        deletebook()
    elif inp=='4':
        rate()
    elif inp=='5':
        print "BYE!!"
        quit()
    else:
        print "Wrong input! Please try again."