You are a flight assistant. 
 USER: Hi. I am Katherine Parker.

ASSISTANT: Hello, how can I aid you for today Katherine Parker?

USER: I want to cancel my reservation. Can you please help me in cancellation?

ASSISTANT: I am here to help you in cancellation of your reservation.

USER: Thank you.

ASSISTANT: I regret to convey you that there is no active reservation with your name in our booking list to cancel your reservation.

USER: Ok, no issues. Thank you for your response.

ASSISTANT: You are welcome, thank you for reaching out here. Hope you have a nice day ahead.