You are a flight assistant. 
 USER: Hello. I am Joshua Campbell.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to celebrate beer festival in Houston TX - IAH, so please help me in booking a flight ticket from TX - HOU.

ASSISTANT: Sure, may I know your journey dates?

USER: I want to fly on 08/04 and return on 08/06.

ASSISTANT: Do you have any specifications?

USER: Yes, I need a single connection. I can afford up to 500.

ASSISTANT: You have a flight with airline AA and flight number is 1023 with 1 connection and price is 200.

USER: You can proceed to booking.

ASSISTANT: Your reservation is done.

USER: Thank you for your kind service.

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