You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you for today?

USER: I'm Larry Carter. I am planning to attend music concert at IAH, can you please help me with booking a flight ticket from DTW?

ASSISTANT: Yes, I can help you with that. Could you share me your travelling dates?

USER: Sure, I would like to take off on 08/22 and return back on 08/24.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Sorry to inform you that there are no flights found on your requested dates.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for contacting us.

USER: You are welcome.