You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Lisa Roberts here.

ASSISTANT: Yes, Lisa.

USER: My wife is sick, so I want to cancel my reservation I made earlier this weekend.

ASSISTANT: Sure, I will help you out in this. Please give me a minute let me check the reservation on your name.

USER: Ok.

ASSISTANT: No reservation found on  your name in our data base.

USER: That's fine, thanks for your information.

ASSISTANT: Thank you for reaching us.