You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am Kevin Thompson. I want to do some modifications in my previous reservation, due to some health issue. Can you please help  me out?

ASSISTANT: Sure, I am gleeful to help in modifying the reservation details. Please allow me a moment to check the reservation on your name.

USER: Sure, I will wait for your information.

ASSISTANT: Sorry Kevin Thompson, there is no reservation found on your name in our database.

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

ASSISTANT: Thank you for reaching us.