You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I would like to attend workshop in California Academy of Sciences at San Francisco with my friend and gain knowledge.

ASSISTANT: Ok.

USER: Could you please help me with booking a flight ticket from PHX to SFO?

ASSISTANT: May I know your travel dates?

USER: Sure, I want to depart on Dec 23 and arrive on Dec 25.

ASSISTANT: Do you have any connection preferences for you?

USER: I prefer to travel in a connecting flight.

ASSISTANT: May I know your good name please to proceed for booking?

USER: I am Scott Smith.

ASSISTANT: Do you have any class preferences?

USER: No, I do not have any class preference but, I want to depart in the evening.

ASSISTANT: Spirit Airlines is providing the connecting flight on this route and the fare of 200. Shall I proceed?

USER: You can proceed with booking.

ASSISTANT: Your reservation is booked with 1011 flight.

USER: Thank you for your help.

ASSISTANT: Thank you.