You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: Justin Moore here. I would like to change my existing reservation as I got injured, please help me out.

ASSISTANT: Sure, please wait for a moment.

USER: Sure, take your time.

ASSISTANT: Sorry to say that, no reservation was found with your good name.

USER: Ok, no issues. Thank you for your information.

ASSISTANT: Thank you for reaching us.