You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: We are crazy to see Lake Travis in Austin.Can you please help me for booking the flight ticket on 05/29 to 05/31?

ASSISTANT: Sure.

USER: The travel details are from TX-AUS to DC-IAD.

ASSISTANT: Let me check, please wait.

USER: Sure.

ASSISTANT: Flight number 1009 of Southwest airlines with 1 connection is available for you.

USER: Ok, proceed with my booking.

ASSISTANT: May I know your name for booking the ticket?

USER: I'm David Martin here.

ASSISTANT: David, your ticket is booked.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.