You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to change my existing reservation, due to some health issue. Can you please help me with this?

ASSISTANT: Sure, I am glad to help you with your concern. Can you please help me with your name to check with the reservation status?

USER: Sure, I am James Scott.

ASSISTANT: Thank you for sharing your name, James Scott. Please bear with me for 2-3 minutes.

USER: Sure.

ASSISTANT: Thank you for waiting, James Scott. Sorry, there is no active reservation found under your name in our database to change.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for reaching us.