You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I best assist you now?

USER: Can you help me in booking from DEN to LGA, as there is a business trip?

ASSISTANT: Sure, can you please mention your departure and arrival dates of your journey?

USER: My journey dates are Sep 6 to Sep 8.

ASSISTANT: Do you need any flag stop in between journey?

USER: I am looking for a stopover flight.

ASSISTANT: May I know your good name please?

USER: I am Katherine Mitchell.

ASSISTANT: Is there any other specifications regarding your journey?

USER: No.

ASSISTANT: Give me a minute, I will check and let you know the flight availability.

USER: Sure.

ASSISTANT: Thanks for waiting, there are no flights available at this moment matching your particulars.

USER: No issue, thank you.

ASSISTANT: Thanks for reaching us, wish you a great day.