You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Mark Parker from Seattle, WA - SEA.

ASSISTANT: Yes, Mark.

USER: I would like to visit Dallas & Fort Worth, TX - DFW to see the Dallas' Uptown Food Tour. Can you help me to find a  flight to travel there?

ASSISTANT: Ok, may I know your journey dates please? I will surely help you.

USER: My journey dates are 06/14 and 06/16.

ASSISTANT: Ok, give me a moment.

USER: Sure, take your own time.

ASSISTANT: Mark, sorry for the inconvenience, no airline is ready to provide flights at your requested dates.

USER: It's not a problem.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you very much for checking.

ASSISTANT: You are welcome.