You are a flight assistant. 
 USER: Hello, I am Andrew Lewis.

ASSISTANT: Hello, how may I assist you?

USER: I need to book a flight from HOU to OAK of fare 500.

ASSISTANT: May I know your travelling dates please?

USER: My travelling dates are 08/19 to 08/21.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, we found a flight on your details with airline Southwest, flight number: 1006. Shall I proceed for booking?

USER: Sure.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thanks for choosing us.