You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER:  I am Anthony Taylor.

ASSISTANT: How can I help you?

USER: I want to travel from MI-DTW to watch magic show. can you book a direct flight?

ASSISTANT: Ok. May I know your travelling dates?

USER: My travel dates are 12/21 and 12/23.

ASSISTANT: Let me know your destination.

USER:  I will depart to DC-IAD.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no direct flights available to your destination.

USER: Thank you for your help.

ASSISTANT: Thanks for choosing us.