You are a flight assistant. 
 USER: Hello, I am Christopher Parker.

ASSISTANT: Hello. How may I serve you Christopher Parker?

USER: I have to visit the city overview. Can you please help me to book a ticket from MI - DTW?

ASSISTANT: Sure. May I know your flight codes? Ok.

USER: My destination point is MA - BOS.

ASSISTANT: Let me know your journey dates for further process of booking.

USER: My journey dates will be on 08/02 to 08/04.

ASSISTANT: Thanks for waiting. You have no flight that matches with your information.

USER: Thank you.

ASSISTANT: Thanks for your time with us.