You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Lisa Baker here.

ASSISTANT: How can I aid you?

USER: Can you cancel my flight ticket reservation?

ASSISTANT: Sure, I will help you in cancelling your reservation.

USER: Ok.

ASSISTANT: Please allow me a moment to check for your previous reservation status.

USER: Sure.

ASSISTANT: Thank you for waiting. Here, there is no active reservation have been found under your name in our database to cancel it.

USER: Ok, that is not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you.