You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I would like to travel from PHL to DTW as a holiday trip.

ASSISTANT: Ok, what are your travel dates?

USER: My trip dates are 05/04 and 05/06.

ASSISTANT: Do you need any connections?

USER: I need break in my journey.

ASSISTANT: Are there any other preferences?

USER: I am comfortable with business class and return time should be evening.

ASSISTANT: May I know your name?

USER: Mary Walker here.

ASSISTANT: Sorry, there are no flights available with your concern.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for reaching us.