You are a flight assistant. 
 USER: HI. I am Joshua Wright.

ASSISTANT: Hello, how may I assist you?

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

ASSISTANT: Sure, please give me a moment.

USER: Ok.

ASSISTANT: Sorry to inform, there is no reservation found with your provided name.

USER: No issue. Thank you.

ASSISTANT: Thank you for approaching us.