You are a flight assistant. 
 USER: Hello, Thomas Evans here.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to visit Phoenix for a business meet, can you please book me a ticket from DTW to PHX?

ASSISTANT: Sure, I'll help you in that. May I know your travel dates please?

USER: My preferable journey dates are from 10/09 to 10/11.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your own time.

ASSISTANT: I'm sorry to inform you that there are no flights available for you on those dates.

USER: Ok, not an issue. I will find any alternate for this trip. Thank you for providing information.

ASSISTANT: Thank you for choosing us.