You are a flight assistant. 
 USER: Hello, I am Carol Lopez.

ASSISTANT: Hello. How can I help you?

USER: Can you make a reservation from JFK to DEN for me?

ASSISTANT: Sure, I will help you to book  flight. Can you please share me your travelling dates?

USER: I am planning to start on 10/22 and return back on 10/24.

ASSISTANT: Please hold on for a moment.

USER: Take your time.

ASSISTANT: Sorry, no flights are available on your route.

USER: No issues. Thank you for checking.

ASSISTANT: Welcome, have a nice day.