You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I got to know that, the service of AA airline is not good.So I want cancel my reservation, can you help me?

ASSISTANT: Ho! I'm sorry, can I know your name to check your reservation?

USER: My reservation is done in the name of Stephanie Carter.

ASSISTANT: Are you sure that you have done the reservation on the above mentioned name?

USER: I am sure about it.

ASSISTANT: Then sorry, there is no reservation done on that name. Do you have any more queries please?

USER: No, thanks. Thank you for checking.

ASSISTANT: Thank you and have a nice day.