You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you?

USER: I am Brian Garcia.

ASSISTANT: Ok.

USER: I need to attend for traditional festival, so please can you book a ticket from DEN to LAS?

ASSISTANT: Sure, I will help you. Please send your travelling dates.

USER: My travelling dates are Nov 30 to Dec 02.

ASSISTANT: I found an economy class ticket in JetBlue airlines with normal cost of 200 and it is a single connecting flight. Can I book your ticket?

USER: I need direct flight, can you please check with that?

ASSISTANT: I am sorry, there are no flights available.

USER: Ok, thank you for the information.

ASSISTANT: Thank you.