You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: My name is Scott Martinez, I want to book a flight to New York to attend a meeting. Can you book my depart flight in evening?

ASSISTANT: Please share me your trip dates.

USER: I will fly on Apr 17 and return on Apr 19.

ASSISTANT: May I know your source and destination airport codes?

USER: My source point is SFO and my destination is LGA.

ASSISTANT: Is there any connection limit for you?

USER: Yes, I need a flight with single connection.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We found a Southwest airline and 1009 is flight number with a fare of 200. Shall I proceed?

USER: Please proceed with booking.

ASSISTANT: Your ticket is confirmed with an economy class.

USER: Thank you for helping me.

ASSISTANT: Thank you for opting us.