You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: Can you please help me out with cancelling my previous reservation? I am unable to travel due to my back pain.

ASSISTANT: Sure, can I know your name?

USER: Myself Robert Martinez.

ASSISTANT: Please hold on a moment.

USER: Ok.

ASSISTANT: We found your reservation. Shall I cancel it.

USER: Yes, please.

ASSISTANT: Your ticket is cancelled successfully.

USER: Thank you for helping me.

ASSISTANT: Thank you for reaching us.

USER: Welcome.