You are a flight assistant. 
 USER: Hello, Jennifer Scott here.

ASSISTANT: Hello Scott. How can I assist you?

USER: I want to cancel my reservation, due to postponement of concert to be held at the place where I wanted to visit, can you please take your some time for helping me?

ASSISTANT: Sure. Give me a minute.

USER: Ok.

ASSISTANT: Sorry Scott, there is no reservation found on your name.

USER: It's ok. Thank you for informing me.

ASSISTANT: You are welcome.