You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to cancel my reservation due to some health issues, so please help me to cancel.

ASSISTANT: Sure, I am here to help you in cancelling your reservation.

USER: Thank you.

ASSISTANT: Please provide me the name to check for the reservation status.

USER: Sure, I am Samantha Roberts.

ASSISTANT: Sorry, there is no active reservation have been found under your name in our database to cancel it.

USER: No worries, thank you.

ASSISTANT: Thank you for reaching us.