You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am looking for a flight which departs on evening. Can you please make a reservation from ATL?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travelling dates are on Feb 20 and 22.

ASSISTANT: Can I know your name?

USER: Patrick Roberts is my name.

ASSISTANT: May I know your other preferences?

USER: I need a connected flight.

ASSISTANT: Can I know your destination point?

USER: My destination airport code is DEN.

ASSISTANT: Sorry, there are no flights available on your travelling dates.

USER: Ok, thanks for your service.

ASSISTANT: Thank you for choosing us.