You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I want to reserve my flight from JFK, can you please reserve it to reach DEN?

ASSISTANT: Sure, when do you want to travel?

USER: I want to travel on the dates of 30th June and July 2nd.

ASSISTANT: Ok, Do you have any class preference?

USER: I prefer economy class.

ASSISTANT: Ok, Do you prefer direct flight or connected flight?

USER: I prefer connecting flight.

ASSISTANT: Ok, please wait for a while.

USER: Make sure that, I need to depart in the afternoon.

ASSISTANT: Ok. Thank you for your time, No flights were found with your given specifications.

USER: Ok, not a problem. Anyways, thank you.

ASSISTANT: Ok, May I know your name?

USER: Sure, I am Andrew Campbell.

ASSISTANT: Ok, Thank you for choosing us.