You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Janet Lopez here. Can you cancel my ticket?

ASSISTANT: Sure. Could you please wait for a momet?

USER: Sure.

ASSISTANT: Sorry Lopez, there is no reservation found on your name.

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

ASSISTANT: You are welcome Lopez.