You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How best can I help you at this moment?

USER: Can you please help me to book a flight from LAS to SFO?

ASSISTANT: Sure, I am happy to help you. May I know your travel dates, please?

USER: Sure, my travelling dates are Mar 13 - Mar 15.

ASSISTANT: Let me know about your maximum number of connections that you prefer.

USER: I need a connecting flight.

ASSISTANT: Do you have any class preference for your flight?

USER: I prefer an business class.

ASSISTANT: May I know about your airline preference?

USER: I am comfortable with any airline.

ASSISTANT: Do you have any specific depart and arrival timings?

USER: No.

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

USER: Myself Robert Martin.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Southwest airlines is providing you the connecting flight in business class, shall I proceed?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been reserved with flight 1018.

USER: Thank you.

ASSISTANT: My pleasure.