You are a flight assistant. 
 USER: Hello, Brandon Parker here.

ASSISTANT: Hello Parker. How can I help you?

USER: Due to some reason, I can't travel. So, please can you cancel my ticket?

ASSISTANT: Sure, give me a minute.

USER: Ok.

ASSISTANT: I found your reservation. Shall I cancel?

USER: Yes.

ASSISTANT: Your ticket has cancelled.

USER: Thank you.

ASSISTANT: You are welcome.