You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I'm George Parker. I am planning to attend music concert at SEA, can you please help me with booking a flight ticket from DFW?

ASSISTANT: Sure, may I know your preferable travel dates please?

USER: Sure, I would like to take off on 01/28 and return back on 01/30.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: You are welcome.