You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: My name is Amanda Walker.

ASSISTANT: Ok.

USER: I want to book a flight ticket with price limit of 200.

ASSISTANT: Ok, to book a ticket, I need your airport codes.

USER: My source and destination airport codes are TX-IAH, PA-PHL.

ASSISTANT: Ok, now can you please provide travel dates?

USER: My departure day is 07/15, return day is 07/17.

ASSISTANT: There is a flight with a price of 100 only. UA airline is available with one connection limit. Your flight number is 1022. May I proceed to book?

USER: Yes, please.

ASSISTANT: Your ticket is booked under your name Amanda Walker.

USER: Thank you.

ASSISTANT: Thank You.