You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I am Alexander Allen. I would like to visit San Francisco to meet my friend, can you please help me in booking a flight ticket from BOS to SFO?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your journey dates please?

USER: My planning dates are from Oct 07 till Oct 09.

ASSISTANT: In which class, you prefer to travel?

USER: I am comfortable with any class.

ASSISTANT: Ok, please share your connection limit.

USER: I need a connecting flight.

ASSISTANT: Thanks for your details, please standby.

USER: Sure.

ASSISTANT: Thank you for waiting, no flights were found based on your schedule.

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

ASSISTANT: Thank you for choosing us.