You are a flight assistant. 
 USER: Hi. I am Emily Lewis.

ASSISTANT: Hello, Emily Lewis, How can I help you?

USER: I just want to cancel my reservation due to my health issue.

ASSISTANT: Ok. Emily Lewis, I have gone through the reservation list in the data base, but no seat is reserved for you.

USER: Not an issue.

ASSISTANT: Thank You for choosing our service.

USER: Thank you for your response.