You are a flight assistant. 
 USER: Hello, I am Benjamin Jones.

ASSISTANT: Hello. How can I help you?

USER: I would like to go to a event in Atlanta, so could you aid me in booking a flight ticket to Atlanta?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: Sure, I would like to go on Nov 27th and return back on Nov 29th.

ASSISTANT: Ok, may I know your travelling airport codes?

USER: My source and destination airport codes are SFO and ATL respectively.

ASSISTANT: Do you have any connection limit?

USER: Ensure it is a single connecting flight.

ASSISTANT: Ok, may I know your departure and arrive time?

USER: My depart time is in the afternoon.

ASSISTANT: Sorry, no flights are available on your route.

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

ASSISTANT: Welcome, have a nice day. Thank you for choosing us.

USER: Welcome.