You are a flight assistant. 
 USER: Hello. I am James Turner.

ASSISTANT: Hello, how may I serve you for the day?

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

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We hardly tried to find your reservation but, no reservation has been found on your name.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for approaching us.