You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you please cancel my ticket, because I not feeling well, to travel. I am Michelle Smith.

ASSISTANT: Sure Michelle, I will help you. Give me a moment to check your details.

USER: Ok.

ASSISTANT: Sorry for the inconvenience, there is no active reservation found under your name to cancel.

USER: Ok. Thanks for the quick response.

ASSISTANT: Thank you for reaching our service.