You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Alexander Robinson here.

ASSISTANT: Alexander, how can I assist you today?

USER: I want to attend an interview.Suddenly my interview is cancelled. Can you please help me for cancel my reservation?

ASSISTANT: Sure, I can help you. Please wait, let me check.

USER: Ok.

ASSISTANT: Robinson, I have not found any reservation by your name.

USER: Ok, thank you for the information.

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