You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you now?

USER: Myself Larry Miller. I want to go New York for my film shooting purpose, can you please book a flight ticket from Denver?

ASSISTANT: Sure, can you please mention the travelling dates of your journey?

USER: I want to take off on 03/22 and also confirm my return ticket too on 03/24.

ASSISTANT: Ok, may I know the airport codes please?

USER: I want to fly from DEN and destination airport is EWR.

ASSISTANT: Please wait for a while.

USER: Ok.

ASSISTANT: Sorry Larry, there are no flights found on your requested dates.

USER: Oh! It's ok no problem.

ASSISTANT: Thank you for approaching us, have a nice day.

USER: Thank you for your information.