You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I be of your assistance?

USER: I want to cancel my recent reservation due to some health problem. Can you help me with that?

ASSISTANT: Sure, please let me know your name to check the reservation status.

USER: Katherine Rodriguez here.

ASSISTANT: Ok, please wait a while.

USER: Sure.

ASSISTANT: Thank you for waiting, I have checked in reservation list to cancel your ticket, but could not find any reservation with your name.

USER: That's ok, no problem. Thank you.

ASSISTANT: Thank you for opting us.