You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Samuel Edwards here.

ASSISTANT: How may I help you?

USER: Due to some reason ,I have cancelled my trip. So, can you cancel my ticket?

ASSISTANT: Sure. Please wait a second.

USER: Sure.

ASSISTANT: Samuel, there is no reservation found on your details.

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

ASSISTANT: Thank you for reaching us.