You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you now?

USER: Can you please book a ticket from DEN to LAS to attend for Science festival?

ASSISTANT: Sure, please share me when you planned to travel?

USER: My journey dates are Dec 5 and Dec 7.

ASSISTANT: Do you want a connecting flight for this journey?

USER: I want single connected flight.

ASSISTANT: Is there any other preferences?

USER: I prefer economy class.

ASSISTANT: May I know your good name?

USER: Sure, I am Jonathan Martinez.

ASSISTANT: I found a connecting flight 1002 of airline Spirit, fare is 100 and class is economy. Shall I proceed with booking?

USER: Ok, please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for visiting us.