You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Larry Philips.

ASSISTANT: How can I aid you?

USER: Can you please be my helping hand in changing my existing reservation?

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: We did not find any reservation on your given name.

USER: No issues, thank you for your help.

ASSISTANT: Thank you.