You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I guide you?

USER: My name is Donald Baker. I met with an accident due to which I would like to change my existing reservation. Can you help me?

ASSISTANT: Sure. Please wait for a moment to check.

USER: Ok.

ASSISTANT: No reservation found on your name. Sorry for inconvenience.

USER: That's fine, thank you for your information.

ASSISTANT: Most welcome.