You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I am Nancy Davis. I have to attend a Seminar in San Francisco SFO from Las Vegas LAS. Can you make a reservation for me?

ASSISTANT: Sure, may I know your travelling dates?

USER: Ok, I want to airborne on Jan 13 and recur on Jan 15.

ASSISTANT: Do you have any other preference?

USER: Yes, I want to return in the afternoon time.

ASSISTANT: Can I know your class preference?

USER: Yes, I need a single connecting flight.

ASSISTANT: Sorry, we could not find any flight on your travelling dates.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for choosing us.