You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I am Rachel Taylor here. I need to book a flight ticket from DTW to  DTW. Will you please help me out in booking a flight ticket?

ASSISTANT: Yes, can you share me your travelling dates?

USER: My travel dates are from Dec 24 to Dec 26.

ASSISTANT: Give me a moment.

USER: Sure, I will wait for your response.

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

USER: It's ok, no problem.

ASSISTANT: Thank you for contacting us.

USER: Anyway, thank you for the information.