You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what type of help that you are assisting from my side?

USER: I have booked a ticket flight ticket to meet my sister but due to an emergency on the same day, she travelled to some other place. So, please cancel my recent ticket.

ASSISTANT: Yes, I am happy to help you.

USER: Thank you.

ASSISTANT: Please provide your name for checking purpose.

USER: My name is Patricia Wilson.

ASSISTANT: Let me check with that one, I am keeping the conversation on hold please wait.

USER: Sure, take your own time.

ASSISTANT: Patricia Wilson, I cannot found your ticket reservation to cancel it. Sorry for the trouble.

USER: It's ok, I am eternally grateful for everything you’ve served me.

ASSISTANT: Thank you for your kind words, have a nice day.

USER: Welcome.