You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Andrew Young.

ASSISTANT: How can I assist you?

USER: Can you help me for cancelling my recent reservation, because I am unable to travel at this moment?

ASSISTANT: Ok, please wait.

USER: OK.

ASSISTANT: Sorry, no reservation found on your name to cancel.

USER: Oh! It's ok, no problem thank you for your services.

ASSISTANT: Most welcome.