You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am planning to attend music concert at SFO, can you please help me with booking a flight ticket from DTW?

ASSISTANT: Sure, can I know the travel dates please?

USER: I would like to take off on Apr 22 and return on Apr 24.

ASSISTANT: Do you have any requirements?

USER: I am looking for a connecting flight.

ASSISTANT: May I know your name please?

USER: My name is Benjamin Robinson.

ASSISTANT: Sorry, there are no flights available as per your request.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for approaching us.

USER: You are welcome.