You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Donna Young.

ASSISTANT: How can I be of your assistance?

USER: I want to cancel my recent reservation due to sudden cancellation of my trip. Can you help me?

ASSISTANT: Sure, I'll help you in cancellation.

USER: Thank you .

ASSISTANT: Please wait a moment I'll check the reservation list.

USER: Ok.

ASSISTANT: Thank you for waiting, there is no reservation found by this name.

USER: That's Fine, Thank you for the information.

ASSISTANT: Thank you for opting us.