You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to book a flight ticket from PHX to SFO, can you please help me in flight booking?

ASSISTANT: Sure, do you have any limits on number of connections?

USER: Yes, I want single connecting flight.

ASSISTANT: Please share your travelling dates.

USER: I want to fly on July 15, return on July 17.

ASSISTANT: Do you have any specifications?

USER: No.

ASSISTANT: May I know your name?

USER: My name is Charles Johnson.

ASSISTANT: We found an Southwest airline with single connection and flight number is 1023. Shall I proceed?

USER: Ok, proceed to booking.

ASSISTANT: Your ticket has been confirmed with business class.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.