You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me in doing a reservation from DEN to JFK?

ASSISTANT: Sure, can you share me your travel dates?

USER: My trip dates are Jan 02 to 04.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Are there any other specifications?

USER: I want to return in evening time.

ASSISTANT: Can I know your good name?

USER: I am Donna Martin.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for reaching us.