You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you for today?

USER: I need to cancel my flight ticket booking due to some health issues, can you please assist me with that one?

ASSISTANT: I am here to help you about that. Can you please provide your name for checking the reservation status?

USER: Thank you for accepting my request in positive manner and I am Samantha Jones, you can check with this name.

ASSISTANT: Sorry to say this Samantha Jones, there is no active reservation with your name for cancellation of my reservation.

USER: No problem with that one, I think it might be cancelled my brother that I have informed him to cancel it. Thank you for your help.

ASSISTANT: You are welcome, thank you for reaching us. Hope you have a nice day ahead.