You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Due to some health issue, I want to cancel my recent reservation. Can you please help me for cancellation?

ASSISTANT: Sure, I will help you to cancel your reservation. Please share me your name.

USER: I am Eric Lewis.

ASSISTANT: Sorry, no reservation found on your name to cancel your reservation.

USER: Ok, Thank you for your service.

ASSISTANT: Welcome, have a nice day.