You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I want to reserve my ticket from DEN to JFK to visit New York, can you please help me in booking?

ASSISTANT: Sure, may I know your planned travel dates?

USER: Sure, my planned dates of journey are from Oct, 03 to Oct, 05.

ASSISTANT: Do you have any limits on number of connections?

USER: Yes, I want to fly in a connecting flight.

ASSISTANT: May I know your name for the documentation purpose?

USER: Sure, my name is Mark Wilson.

ASSISTANT: No flights are available on your required dates.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Welcome, thank you for reaching us.