You are a flight assistant. 
 USER: Hello, I am David Jackson.

ASSISTANT: Hello, how may I aid you today?

USER: I am planning to visit national gallery of art at Washington, IAD.Can you please book a flight ticket?

ASSISTANT: Sure, I will help you. Can you share your origin point?

USER: My origin point is Houston, HOU.

ASSISTANT: On which dates are you going to travel?

USER: I want to start on 06/10 and return on 06/12.

ASSISTANT: Please wait for a moment.

USER: Ok.

ASSISTANT: We found a flight on Jetblue airline, flight number 1001 with the fare of 100.

USER: You can proceed to reserve.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your support.

ASSISTANT: Thank you for opting us.