You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Matthew young. I want to cancel my recent reservation due to sudden change in my trip. Can you help me with this cancellation?

ASSISTANT: Sure, I will help you.

USER: Ok.

ASSISTANT: Please wait a minute. There is no reservation found under your name.

USER: No issue, thank you for checking.

ASSISTANT: Most welcome.