You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can i assist you today?

USER: I am Timothy Edwards want to attend a seminar in University of Houston, can you book a flight on dates 10/12 and 10/14?

ASSISTANT: Sure, can you please help me with your airport codes?

USER: Yes, I would like travel from DCA to HOU.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Thank you for waiting. A flight is found in southwest airlines with price 200 having single connection. Shall I proceed with it?

USER: Ok, proceed with my booking.

ASSISTANT: Your ticket is confirmed in flight number 1011.

USER: Thank you.

ASSISTANT: Thank you for opting us.