You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I serve you?

USER: I need a ticket from San Francisco to attend a sports event.

ASSISTANT: Ok. I am here to help you. Let me know your depart and arrival dates.

USER: I will depart on 05/21 and will arrive by 05/23.

ASSISTANT: May I know your good name?

USER: My name is Jeffrey Johnson.

ASSISTANT: Help me with your airport codes.

USER: Sure. Airport codes are SFO and DEN.

ASSISTANT: Do you prefer connecting flight?

USER: I prefer connecting flight.

ASSISTANT: Thank you for sharing details. There is a flight with airline: spirit, flight number:1020, price 100, 1 connection. Shall I proceed?

USER: Please proceed to book a flight.

ASSISTANT: Your ticket has been confirmed.

USER: Thanks for the help.

ASSISTANT: Thank you for opting us.