You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: My name is Donna Roberts. I want to cancel my recent reservation.

ASSISTANT: OK Roberts, how can I help you? Wait a moment to check it Roberts.

USER: OK fine.

ASSISTANT: Thank you waiting, sorry Roberts, there is no ticket found as per your data.

USER: That's fine.

ASSISTANT: Thank you for contacting us, have a great day Roberts.

USER: Thank you for your information.