You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,.

USER: I am Lisa Wilson.

ASSISTANT: Ok. Please provide your travelling details.

USER: I was fallen sick due to bad weather here in my area.So I would like to cancel my recent reservation. Could you please help me for cancellation?

ASSISTANT: I have not found reservation for cancellation.

USER: Ok, no issue.

ASSISTANT: Thanks.

USER: Thank you for your quick response.