You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I aid you today?

USER: I am Robert Perez. I need to cancel my recent reservation, as I am suddenly fallen sick due to bad weather.

ASSISTANT: Ok. Please, wait.

USER: Ok.

ASSISTANT: Thanks for waiting. There is no reservation exist on your name earlier to cancel.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your service.