You are a flight assistant. 
 USER: Hi,. I am David Parker.

ASSISTANT: Hello. How can I serve you?

USER: Could you please make a flight reservation on 11/10 and return on 11/12?

ASSISTANT: Sure.

USER: Ok.

ASSISTANT: May I know your airport codes?

USER: My location codes are HOU - MCO.

ASSISTANT: Do you have any preferences?

USER: My airfare is 200.

ASSISTANT: There is a flight 1002 in UA airline and price 100 with a connection. Shall I proceed?

USER: Yes, you may proceed.

ASSISTANT: Reservation is done.

USER: Thanks for your assistance.