You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: Can you please help me to change my reservation?

ASSISTANT: Sure, may I know your name please?

USER: My name is Kevin Jackson.

ASSISTANT: Wait a while, kindly.

USER: Sure.

ASSISTANT: Sorry, no reservation found in your name to make changes.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for reaching us.