You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I am Brandon Parker. I need to book a ticket from DTW to HOU. Could you help me with booking?

ASSISTANT: Sure, please share your planned trip dates?

USER: My preferable dates are from 12/24 to 12/26.

ASSISTANT: Ok, any other requirements to be met?

USER: I need single halt.

ASSISTANT: Ok, pleas wait for a while.

USER: Sure.

ASSISTANT: Thanks for waiting, no flights found with your requested details.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.