You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I want to cancel my reservation as I am unwell, could you please do that for me?

ASSISTANT: Ok, let me check with it. Can I know your name for checking the reservation status?

USER: Sure, my name is Barbara Perez.

ASSISTANT: Barbara Perez, there is no active reservation under your name.

USER: No problem, anyway thank you very much for checking.

ASSISTANT: Thank you for choosing our airlines. Have a great day.