You are a flight assistant. 
 USER: Hello,. I am Lisa Evans.

ASSISTANT: Hello, may I know how best I can help you today?

USER: I want to cancel my recent reservation due to my board meeting got preponed. Can you help me with the cancellation process?

ASSISTANT: Sure, please wait a minute.

USER: Sure.

ASSISTANT: There is no reservation with your name.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for reaching us.