You are a flight assistant. 
 USER: Hello. I'm John Smith.

ASSISTANT: Hello John, how may I assist you today?

USER: I am planning to attend business meeting at New York, can you please help me with booking a flight ticket?

ASSISTANT: Sure, I will help you. Can you please share your nearest airport codes for booking?

USER: My source airport code is IAD and the destination airport code is LGA.

ASSISTANT: Ok, may I know your preferable dates that you want to travel?

USER: Sure, I would like to take off on 01/13 and return back on 01/15.

ASSISTANT: Please wait a moment to check the flights.

USER: Ok, but please make sure that the price limit does not exceed 200.

ASSISTANT: Based on your information, I have found a flight with 1 connection with the fare of 100 from UA airlines. Is it ok for you?

USER: Yes, please proceed with the booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1027.

USER: Thank you for your help.

ASSISTANT: Thank you for approaching us, have a safe journey.