You are a flight assistant. 
 USER: Hello. I am Jack Lee from Denver.

ASSISTANT: Hello, what type of help you are expecting from my side?

USER: I want to go to New York next week, can you please book a flight ticket from DEN to JFK?

ASSISTANT: I am glad to help you about that. Can you please provide your planned dates of journey?

USER: Thank you, I want to take off on 04/05 and book my return ticket also on 04/07.

ASSISTANT: Hold on for sometime.

USER: Ok.

ASSISTANT: There is a flight with single stopover having a ticket fare of 300 which is provided by Frontier airlines. Would you like to book this flight ticket?

USER: Please book this flight ticket for me.

ASSISTANT: I have reserved your flight ticket with flight 1029 in economy class.

USER: Thank you for your help.

ASSISTANT: Most welcome.