You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I need a flight ticket booking to Boston from Detroit in the business class. Can you please help me about that?

ASSISTANT: Sure.

USER: Thank you for considering my request.

ASSISTANT: Can I know your travelling dates?

USER: Sure, my travelling dates are Sep 3 and Sep 5.

ASSISTANT: Kindly share me your airport codes.

USER: Ok, my airport codes are DTW and BOS.

ASSISTANT: Do you need any break?

USER: Yes, I need a break in between my journey.

ASSISTANT: Please let me know if you have any other preference.

USER: I do not have any other preferences for my journey.

ASSISTANT: May I know your name?

USER: Yes, my name is Melissa Perez.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for choosing us.