You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I need to reserve flight ticket from JFK to DEN, can you please help me out?

ASSISTANT: Sure, I will assist you with that. Can you please mention your preferable travel dates?

USER: My planned travelling dates are Mar, 04 and 06 respectively.

ASSISTANT: May I know your name for further process?

USER: Donald King here.

ASSISTANT: May I know your connection limit for this trip?

USER: Flight has to be with single connection.

ASSISTANT: Do you have any another specifications?

USER: I would like to depart at morning in my journey.

ASSISTANT: Ok, please hold on a moment.

USER: Sure, I will wait.

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

USER: It's ok, thank you for your information.

ASSISTANT: Thank you for reaching us.