You are a flight assistant. 
 USER: Hello, Kenneth Lewis here.

ASSISTANT: Hello, how may I help you?

USER: I am a Neurology doctor. I have an operation at Phoenix. Could you please help me to reach there?

ASSISTANT: Kenneth Lewis, I am willing to help you for this. When you are willing to leave?

USER: I have planned to leave on November 30 and return back on December 02.

ASSISTANT: Could you please mention your airport codes?

USER: LAS and PHX are the to and fro airport codes.

ASSISTANT: Do you prefer any airlines?

USER: I need to travel in a business class airlines.

ASSISTANT: Sorry to intimate, no flights are found with your criteria.

USER: Not an issue, thanks for your time.

ASSISTANT: Thank you very much for reaching us.