You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

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

ASSISTANT: Sure, kindly share your travel dates.

USER: Sure, I would like to go on Oct 18th and return back on Oct 20th.

ASSISTANT: Do you have any connection preference?

USER: Ensure it is a direct flight.

ASSISTANT: Is there any other specification?

USER: No, I don't have any other requirements.

ASSISTANT: Please share your name.

USER: Myself Rachel Anderson.

ASSISTANT: Sorry to say, no reservation found with your requirement.

USER: That's ok, thank you for checking the availability.

ASSISTANT: Thanks for reaching us.