You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you today?

USER: Can you please help me in booking from DTW to BOS?

ASSISTANT: Sure, please share me your trip dates.

USER: My trip dates are from Feb 9 to Feb 11.

ASSISTANT: May I know your class preferences?

USER: I am comfortable with any class.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: My name is Gary Wright.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, No issues, thank you.

ASSISTANT: Thank you for opting us.