You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: Can you help me with booking ticket from DTW to PHL, for attending a function at home.

ASSISTANT: Sure, please provide me your itinerary travel dates.

USER: Ok, my trip dates are from Aug 23 to 25.

ASSISTANT: May I know if you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any time concern?

USER: No.

ASSISTANT: Are there any more preferences that you want to avail?

USER: No.

ASSISTANT: May I know your name please?

USER: Sure, I am Timothy Lewis.

ASSISTANT: Give me a moment.

USER: Sure.

ASSISTANT: Timothy Lewis. I regret to inform that there are no flights on your route with the given dates.

USER: It's ok, thanks for checking.

ASSISTANT: Thank you for reaching us.