You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I would like to book a ticket from DEN to LAS, can you please help me with that?

ASSISTANT: Could you let me know your journey dates?

USER: The travel dates are from 07/20 to 07/22.

ASSISTANT: Ok. Do you prefer direct flight or connecting flight?

USER: I need a flight with 1 connection limit.

ASSISTANT: Is there any other preferences?

USER: No.

ASSISTANT: May I know your name?

USER: Lisa Young here.

ASSISTANT: Direct flight is found with Spirit airlines for price 200.

USER: Please proceed.

ASSISTANT: Shall I book a ticket?

USER: Proceed.

ASSISTANT: Sure. Your ticket is booked in an economy class having flight number 1001 which departs at 17:00 hours and arrives at 15:00 hours.

USER: Thank you.

ASSISTANT: Thank you. Have a nice day!.