You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Can you please help me with booking a flight ticket from BOS to SEA?

ASSISTANT: Sure, may I know your planned travel dates please?

USER: My travelling dates are from Apr 26-28.

ASSISTANT: Would you like to travel in a connecting flight or a direct flight?

USER: I would be comfortable with single stop over.

ASSISTANT: May I know your good name please?

USER: Ryan Adams here.

ASSISTANT: Sorry, there is no flight available on your requested dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for reaching us.