You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: Could you please help me with booking a flight ticket from SFO to Boston, BOS?

ASSISTANT: When you are willing to travel?

USER: I want to start my journey on Apr 26 and return back on Apr 29.

ASSISTANT: Do you have any connection limit?

USER: I need a flight with single connection limit.

ASSISTANT: May, I know your good name?

USER: Sure, myself Brian Turner.

ASSISTANT: Sorry, we found no flights on your given dates.

USER: Not an issue, anyway thank you for the information.

ASSISTANT: Thank you for reaching.