You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: I need to modify my reservation as I had met with an accident last week. Can you help me with that?

ASSISTANT: Sure, we are pleased to serve you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: Sure, my name is Anthony Walker.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there is no active reservation found in your name to change.

USER: Not a problem, anyways thank you for the information.

ASSISTANT: Thank you for reaching us.