You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I am Daniel Smith. I am planning to meet my uncle in Washington, so please help me in booking a flight ticket?

ASSISTANT: Sure, please let me know your journey dates?

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

ASSISTANT: May I know your source and destination airport codes?

USER: My source is Houston, TX - IAH and destination code is DC - IAD.

ASSISTANT: OK, please wait for a while.

USER: Sure.

ASSISTANT: We found a flight with price 300 for Southwest airline.

USER: You can proceed to booking.

ASSISTANT: Your booking has been confirmed for flight number 1005.

USER: Thank you.

ASSISTANT: Thank you for availing us.