You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need a flight ticket booking with a non stop flight for my journey, can you please assist me with flight ticket booking from SFO to DTW regions?

ASSISTANT: Sure, kindly share your travel dates.

USER: Thank you for considering my request and I want to take of on 13 Sep and arrival back on 15 Sep.

ASSISTANT: Do you have any connection limit?

USER: No, I would like to travel in a direct flight.

ASSISTANT: Is there any other specifications?

USER: No, check with the above specifications.

ASSISTANT: Please share your name.

USER: Sure, I am Michael Scott.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no flights found with your requirement.

USER: Sad to hear that one, I can prefer any other source to travel. Thank you for your immediate response.

ASSISTANT: Thanks for reaching us.

USER: Welcome.