You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: Can you please help me in changing my reservation?

ASSISTANT: Sure, May I know your name?

USER: Sure, my name is Gary Jones.

ASSISTANT: Please wait a second.

USER: Sure.

ASSISTANT: Sorry, No reservation found on your name.

USER: Ok, No issues, thank you.