You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I have reserved a flight ticket to enjoy my holidays but now I have to cancel the ticket, can you help me?

ASSISTANT: Sure, may I know your name?

USER: My name is Michelle Miller.

ASSISTANT: Please wait for a moment to check your details.

USER: Sure.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, that's fine, I can check it later, thank you for your help.

ASSISTANT: Thank you for choosing us, have a nice day.

USER: Welcome.