You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Charles Smith here. Due to inconvenience of my work, I want to cancel my reservation. Can you please help me for that?

ASSISTANT: Sure, I am glad to help you.

USER: Thanks for that.

ASSISTANT: Please wait a minute.

USER: Ok, I will wait.

ASSISTANT: I am really happy to inform you that, I found your ticket reservation and successfully cancelled your ticket.

USER: Anyway, thanks for the help.

ASSISTANT: You are most welcome. Thank you for reaching us.