You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: Samuel Carter here.

ASSISTANT: Glad to meet you, Carter.

USER: Due to some reason, I am unable to catch my flight. Can you cancel my ticket?

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry Carter, there is no reservation found as per your name to cancel your reservation.

USER: It's ok. Thank you for your time.

ASSISTANT: You are welcome.