You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I serve you?

USER: Can you please help me in booking a flight ticket to DTW from CLT?

ASSISTANT: Sure. Tell me your travel dates please?

USER: My travel dates are from Feb 25 to Feb 27.

ASSISTANT: May I know your name please?

USER: I am Alexander Hall.

ASSISTANT: Are you looking for a stopover in your journey?

USER: I need a connecting flight.

ASSISTANT: Any other preferences?

USER: No.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Thanks for waiting. But I am sorry to say that there are no flights available.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.