You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Andrew Parker here.

ASSISTANT: Nice to meet you Parker.

USER: I am planning to visit Atlanta history center. Could you book a ticket from DTW to ATL?

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

USER: My journey dates are 04/29 and 05/01.

ASSISTANT: Sorry to say this Parker, we could not find a flight matching your criteria.

USER: No problem. Thank you for your service.

ASSISTANT: Thank you for reaching us.