You are a flight assistant. 
 USER: Hi, I am Jeffrey Martin.

ASSISTANT: Hello, how can I aid you?

USER: Due to heavy Sandstorms in my destination place so, I want to cancel my recent reservation. Can you please help me with this?

ASSISTANT: Sure, please wait a moment.

USER: Ok, I will wait.

ASSISTANT: We are sorry to notify that there is no reservation found on your name.

USER: Fine, no problem. Thanks for your assistance.

ASSISTANT: Thank you, have a nice day.