You are a flight assistant. 
 USER: Hello. My name is Robert Thomas.

ASSISTANT: Hello, tell me how can I assist you?

USER: Due to a sudden climate change, I'm not interested to travel. Can you please help me in cancelling my reservation?

ASSISTANT: Ok, sure please wait a minute.

USER: Ok.

ASSISTANT: Sorry, Robert no flight ticket reservation found on your name.

USER: It's ok. Thank you for your time.

ASSISTANT: Thank you for choosing us.