You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I want to visit Beer festival in DEN. Can you please assist me for booking from ATL?

ASSISTANT: Sure, please provide your trip dates.

USER: My trip dates are June 21 and 23.

ASSISTANT: Do you have any other requirements?

USER: I need a connected flight in economy class.

ASSISTANT: Ok, please wait a minute. Thank you for waiting and we have found a flight in economy class with 1 connection in JetBlue airlines and the fare of your flight will be 200. Do you like me to proceed your booking with this flight?

USER: Make sure that my return flight time is evening.

ASSISTANT: Sorry, there is no flight available.

USER: Ok, thank you.

ASSISTANT: May I know your name?

USER: Sure, my name is Joseph Thomas.

ASSISTANT: It's ok, thank you.