You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you today?

USER: Please book a ticket from LAX to DEN to attend Sports festival.

ASSISTANT: Sure, I am happy to help you with that. May I have your travelling dates?

USER: My travelling dates are Apr 21 and Apr 23.

ASSISTANT: May I know your good name?

USER: I am Barbara Carter.

ASSISTANT: Can I know your class preference?

USER: I am comfortable with any class.

ASSISTANT: May I know your connection limit?

USER: I want single connected flight.

ASSISTANT: Can I have your depart and return timings?

USER: I am comfortable with any time.

ASSISTANT: Please wait for a minute.

USER: Ok.

ASSISTANT: The Spirit airlines are providing a flight having a connection limit 1 and the ticket fare of 200. Can I proceed with the ticket booking?

USER: Ok, please proceed.

ASSISTANT: I have confirmed in an economy class and the flight number 1020.

USER: Thank you.

ASSISTANT: Thank you for approaching us. Have a safe journey.