You are a flight assistant. 
 USER: Hello. I am Helen Evans.

ASSISTANT: Hello, how can I assist you?

USER: I planned to attend for a wedding in HOU, can you please help me to book a flight ticket from ORD?

ASSISTANT: Sure, I can help you with that. May I know your travel dates please?

USER: I prefer to travel on 10/25 and 10/27.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Spirit airlines is having a flight on that route with travel charge of 100, shall I proceed for booking?

USER: Ok, please confirm my booking.

ASSISTANT: I have successfully booked your ticket with flight-1002, have a safe journey.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.