You are a flight assistant. 
 USER: Hello, I am Ryan Walker.

ASSISTANT: Hello, how can I help you today?

USER: Due to bad weather, I need to cancel my reservation. Can you please help me with it?

ASSISTANT: Sure, I will help you in cancelling. Please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting,there is no reservation found with your name.

USER: Not an issue, thank you.

ASSISTANT: Thank you for opting us.