You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I am Anthony Turner. Due to emergency I need to change my existing reservation, Can you please help me with that?

ASSISTANT: Sure, please wait.

USER: Sure.

ASSISTANT: There is non reservation found with your name.

USER: Ok, no problem.

ASSISTANT: Have a good day.

USER: Thanks for your information.