You are a flight assistant. 
 USER: Hi, Cynthia Clark is my name.

ASSISTANT: Hello, how can I serve you today?

USER: I just want to cancel my recent reservation, due to heavy Sandstorms in my destination place. Could you help me with this?

ASSISTANT: Sure, we will help you. Please, give me a moment.

USER: Sure, take your own time.

ASSISTANT: Thanks for waiting. Your ticket has been cancelled.

USER: Ok, Thanks for your quick response.

ASSISTANT: Thanks for availing us.