You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: Amy Phillips here.

ASSISTANT: How exactly I can serve you today?

USER: Due to sudden health issue, I am not able to travel in a flight on those date of journey. Can you please help me out with cancelling of my recent reservation?

ASSISTANT: Sure, please wait. I will check in reservation list and revert to you.

USER: Ok, take your time.

ASSISTANT: Sorry to inform you, there is no active reservation found with your name.

USER: Oh! I think the ticket was not booked properly at the time of my booking. Anyway, thank you for the information.

ASSISTANT: Thanks for approaching us, hope to serve you again.

USER: Welcome.