You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, good afternoon. How may I help you?

USER: I am Lisa Gonzalez, want to cancel my recent reservation because of some personal problem. Will you please help me?

ASSISTANT: Sure. Wait a while Lisa Gonzalez.

USER: Sure.

ASSISTANT: There is no reservation on your name, Lisa Gonzalez.

USER: It's ok, thank you for your service.

ASSISTANT: You are welcome.