You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Eric Harris.

ASSISTANT: How can I help you?

USER: Can you please help me with booking a flight ticket from DTW to HOU?

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

USER: Sure, I would like to take off on 06/15 and return back on 06/17.

ASSISTANT: Sorry to inform you that there are no flights available on those dates.

USER: That's ok.

ASSISTANT: Thank you for choosing us.

USER: Thank you for checking.