You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I want to cancel my recent reservation. Could you help me with that?

ASSISTANT: Ok, sure. Please wait for a while.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's ok. Thank you.

ASSISTANT: I have to re-verify your name in my Database. Can you please tell me your name?

USER: Alexander Adams here.

ASSISTANT: I have rechecked again but no reservation found on your name.

USER: That's ok, no problem. Thank you for helping me.