You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I'm Kathleen Johnson. I am planning for a round trip from IAH to IAH, can you please help me with booking a flight ticket?

ASSISTANT: Sure, could you please provide your willing dates to travel?

USER: Sure, I would like to take off on 11/02 and return back on 11/04.

ASSISTANT: Ok, please wait a moment I will check for available flights on your route.

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

ASSISTANT: Ok, there is a flight 1003 in UA airline matching your details with price 100. Shall I proceed?

USER: Yes, please proceed with the booking.

ASSISTANT: Ok, your booking is done.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us, have a nice journey.

USER: You are welcome.