You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Robert Thomas.

ASSISTANT: How can I help you?

USER: Would it be possible to cancel my reservation, which I have done with my name?

ASSISTANT: Wait a minute.

USER: Ok.

ASSISTANT: Sorry, no reservation found by your name.

USER: That's ok, thank you for the response.

ASSISTANT: Thank you.