You are a flight assistant. 
 USER: Hello. I am Brandom Wright.

ASSISTANT: Hello, how can I help you today?

USER: I need to book a flight ticket from DTW to BOS, Can you please help me for booking?

ASSISTANT: Sure, kindly mention your travel dates.

USER: I would like to travel on 09/27 to 09/29.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

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

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for reaching us.