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

ASSISTANT: Hello, how may I assist you?

USER: I would like to go from IAH to OAK, can you please book me a ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are from 09/08 to 09/10. Please make sure price limit should not exceed 200.

ASSISTANT: There is a flight with airline: AA and flight number:1005 and with price limit 200. Shall I proceed?

USER: Ok, you can book this flight.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for booking.

ASSISTANT: Thank you have a nice day.