You are a flight assistant. 
 USER: Hello. I am Amy Taylor.

ASSISTANT: Hello, how may I best serve you today?

USER: Due to my health problem I want to cancel my reservation, can you please help me that?

ASSISTANT: Sure, I will help you in cancelling your previous ticket.

USER: Thank you.

ASSISTANT: Please hold on a moment, I will check the status of your recent reservation.

USER: Ok.

ASSISTANT: Thanks for your precious time, no existing reservation found on your name in the database.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for choosing us.