You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: Could you please help me with booking a flight ticket on 08/25 and return on 08/27?

ASSISTANT: Sure. I will help you. Can you please share the trip airport codes?

USER: I want to fly from Dallas & Fort Worth, TX-DFW to San Francisco, CA-SFO.

ASSISTANT: May I have your name?

USER: I am Mark Campbell.

ASSISTANT: Ok. We found a connecting flight, shall I proceed further?

USER: Yes, please proceed.

ASSISTANT: Ok. Your ticket has been reserved with a UA airline, 1008 flight number. Price of the ticket is 200.

USER: Thank you for your help.

ASSISTANT: Thank you.