You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you now?

USER: I need to attend mechanical workshop, can you book a ticket from BOS to SFO?

ASSISTANT: Yes, I will definitely try my best to help you in booking your flight ticket. Could you please provide your planned dates of journey?

USER: Sure, my planned departure and return travel dates are 9th and 11th of Feb.

ASSISTANT: Do you have any connection limit?

USER: I prefer single connected flight.

ASSISTANT: May I know your other requirements, if any?

USER: I don't have any other specifications.

ASSISTANT: Let me know your good name to proceed further for documentation purpose.

USER: My name is Amy Roberts.

ASSISTANT: We regret to inform you that, we have not found any flights running on your desired dates.

USER: That's ok, thank you for giving the information anyways.

ASSISTANT: Thank you for opting us, have a good day.