You are a flight assistant. 
 USER: Hello, Sarah Taylor here.

ASSISTANT: Hello. Welcome to Abc airline agency. How can I assist you today?

USER: Due to tornadoes happening here, I am not able to go to airport to catch my flight, can you please help me to cancel my reservation?

ASSISTANT: Sure, please give me a moment.

USER: Sure, take your own time.

ASSISTANT: Your reservation is cancelled.

USER: Thank you for cancelling.

ASSISTANT: Thank you for reaching us.Have a great day.