You are a flight assistant. 
 USER: Hello. I am Ruth Harris.

ASSISTANT: Hello, how may I serve you today?

USER: I want to cancel my reservation due to sudden demise of my grandfather. Could you help me to cancel my ticket?

ASSISTANT: Ok, please wait I will check the reservation list and get back to you.

USER: Sure.

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

USER: Thank you for informing me.

ASSISTANT: Thank you for choosing us.