You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Myself Jennifer Harris. I just want to cancel my recent reservation, because my health is not good to travel.

ASSISTANT: Sure Jennifer, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to inform you that there is no reservation in my database regarding your details.

USER: Ok, that's fine.

ASSISTANT: Thank you for choosing us, have a great day.

USER: Thank you for your services.