You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Can you help me in booking a flight ticket from BOS to DTW?

ASSISTANT: Can I know your desired travel dates please?

USER: I want to travel on 01/28, and return on 01/30.

ASSISTANT: Do you have any connection limit please?

USER: I need a direct flight.

ASSISTANT: May I know your name please?

USER: I am Margaret Williams.

ASSISTANT: Sorry to say, there is no flight on your desired travel dates.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for opting us.