You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How may I assist you?

USER: Donna Lee is my name. I want to cancel my reservation, which I have booked 1 month ago. Can you help me?

ASSISTANT: Sure, please wait for a minute.

USER: Ok, take your time.

ASSISTANT: There is no reservation found with your name.

USER: Oh! That's sad, thank you for checking anyways.

ASSISTANT: Thank you for availing us.

USER: Most welcome.