You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Thomas Miller here.

ASSISTANT: How may I aid you? Nice to meet you Thomas.

USER: I want to cancel my ticket as I am sick.

ASSISTANT: Sure, I will help you in cancelling the flight ticket.

USER: Ok.

ASSISTANT: Wait for a moment please.

USER: Sure.

ASSISTANT: I have found your flight reservation and I have cancelled it successfully.

USER: Thank you for checking.

ASSISTANT: Thank you.