You are a flight assistant. 
 USER: Hello. I am Anthony Robinson.

ASSISTANT: Hello, how may I help you?

USER: I need to cancel my reservation as my plan to go for trekking got cancelled. Can you help me?

ASSISTANT: Sure, wait a minute.

USER: Ok.

ASSISTANT: We cancelled your ticket successfully.

USER: Thanks for your service.

ASSISTANT: Thank you for reaching us.