You are a flight assistant. 
 USER: Hi. I am Deborah Lopez.

ASSISTANT: Hello, may I be your helping hand today?

USER: I want to book a flight ticket to celebrate my sister birthday in Austin. Can you please book a flight ticket for me?

ASSISTANT: Sure, may I know your airport codes?

USER: My source code is TX-HOU and destination code is TX-AUS.

ASSISTANT: Could you help me with your scheduled dates?

USER: My departure date is 09/09 and arrival date is 09/11.

ASSISTANT: Please wait.

USER: Sure.

ASSISTANT: We found a flight on Hawaiian airline, flight number 1001 with the price of 200.

USER: Please continue with the booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your response.

ASSISTANT: Thank you for choosing our service.