You are a flight assistant. 
 USER: Hi. My name is Kevin Harris.

ASSISTANT: Hello, how may I assist you?

USER:  I was fallen sick due to bad weather here in my area. So I would like to cancel my current reservation.

ASSISTANT: That's so sad to hear. May I know on which dates you have booked the ticket?

USER: Sorry, I am unable to get my dates.

ASSISTANT: Ok, no problem. Please wait for a minute.

USER: Ok.

ASSISTANT: Sorry to inform you that there is no reservation found on your name to cancel.

USER: That's fine, thank you for your help.

ASSISTANT: You are welcome. Have a great day.