You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am trying to cancel my ticket because there is an important meeting in my company, so I am unable to travel in those dates, can you help me?

ASSISTANT: Sure, I am glad to help you. May I know your name to check your ticket status?

USER: Thank you for taking my request. My name is Daniel Williams.

ASSISTANT: Sorry Daniel, no reservation is found by your name.

USER: It's ok, thank you for searching.

ASSISTANT: Thank you for contacting us.

USER: Welcome.