You are a flight assistant. 
 USER: Hello, I am Larry Taylor.

ASSISTANT: Hello, how may I aid you?

USER: Due to vacation, I want to change my existing reservation. Can you help me with it.

ASSISTANT: Sure, please hold on a minute. Let me check the status.

USER: Sure.

ASSISTANT: Thanks for your patience. There was no existing reservation found on your name.

USER: No issues. Thank you, for the information.

ASSISTANT: Thank you for approaching us.