You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Can you help me in booking a flight ticket from DEN to JFK?

ASSISTANT: Sure, I will help you with that. May I know your planned journey dates?

USER: I want to travel on 06/25, and return on 06/27.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Is there any other requirements regarding your journey?

USER: I need a break in my journey.

ASSISTANT: May I know your name please?

USER: I am Michelle Gonzalez.

ASSISTANT: Sorry to say that, there are no flights found on this route as per your travel dates.

USER: Ok, no issues. Thanks for the information.

ASSISTANT: Thank you for reaching us, have a great day.