You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: My name is Matthew Roberts.

ASSISTANT: Yes Roberts.

USER: I am planning to cancel my reservation, can you help me?

ASSISTANT: Sure, I will help you with that, please hold on for a moment to check your reservation status.

USER: Ok.

ASSISTANT: Roberts, I did not find any reservation with your name in my database.

USER: It's fine. Anyway, thank you for your help.

ASSISTANT: It's my pleasure.