You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Deborah Evans, needed to cancel my recent reservation, as I am suddenly fallen sick. Please help me in cancelling?

ASSISTANT: OK, please wait I will revert you.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name.

USER: Ok, no worries. Thanks for your service.

ASSISTANT: Thank you for reaching us.