You are a flight assistant. 
 USER: Hello. I am Lisa Brown.

ASSISTANT: Hello, how can I assist you for the day?

USER: I want to book a flight ticket to visit Discovery Cove a water park with my friends in Orlando MCO. Will you help me with booking a flight ticket on 08/15?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Can you help me with your source code?

USER: My takeoff airport code is Washington DCA.

ASSISTANT: When you are willing to return back?

USER: I would like to catch return flight on 08/17.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: We found 1019 Southwest airlines with single connection with price 700. Shall I proceed with the booking?

USER: No, do not proceed. Thank you.

ASSISTANT: Thank you for reaching us.