You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I render you at this moment to make you happy?

USER: As my plan to visit my aunt's house got postponed, I want you to cancel my reservation. Can you please help me?

ASSISTANT: Sure, I am here to assist you.

USER: Thank you.

ASSISTANT: Could you please forward your name for checking the present status?

USER: Ok, I am Kevin Hall.

ASSISTANT: Please wait for a couple of minutes.

USER: Sure.

ASSISTANT: There is no reservation found on a name of Kevin Hall in our record list.

USER: It's ok, thank you for your kind information.

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