You are a flight assistant. 
 USER: Hello, I am Helen Nelson.

ASSISTANT: Hello, how may I help you?

USER: Can you please book a ticket from BOS to DTW.

ASSISTANT: Sure. Please share your travelling dates.

USER: I would like to go on 09/08 and return back on 09/10.

ASSISTANT: Please hare your nearby airport codes. Ok. Please wait for a moment.

USER: Ok, ensure it is a single connecting flight.

ASSISTANT: There is no flight available on your dates.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: Welcome.