You are a flight assistant. 
 USER: Hello.

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

USER: I am planning for a trip from DEN to LGA, can you help me over that?

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

USER: Ok, my planned dates are from June 22 to 24.

ASSISTANT: May I know your name for further process?

USER: Sure, I am Kevin Nelson.

ASSISTANT: Do you need any specific depart and arrival time for this trip?

USER: No.

ASSISTANT: Do you have any another specifications?

USER: I need a flight in business class with 1 connection.

ASSISTANT: Ok, please hold on a moment.

USER: Sure, take your time.

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

USER: It's ok, thank you.

ASSISTANT: Thank you for reaching us.