You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: I am planning to visit Detroit, will you help me in booking the flight ticket from BOS to DTW?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My travelling dates are Feb 13 and Feb 15.

ASSISTANT: Ok, could I have your name please?

USER: Myself Samuel Thomas.

ASSISTANT: Ok, please allow me a moment.

USER: Sure, take your own time.

ASSISTANT: Sorry, there is no flight with your request.

USER: Ok, no an issue.

ASSISTANT: You are welcome, have a great day.

USER: Thank you for your information.

ASSISTANT: Thank you.