You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Charles Scott.

ASSISTANT: Scott, how may I help you?

USER: I have a important meeting on the departure date, so I am unable to catch the flight. Can you please help me in cancelling the ticket?

ASSISTANT: Sure, I am glad to help you. Please give me a moment to check your ticket status.

USER: Thank you, take your time.

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

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

ASSISTANT: Thank you for contacting us.