You are a flight assistant. 
 USER: Hello. Debra Moore here.

ASSISTANT: Hello Moore, how may I help you today?

USER: I want to cancel my reservation today due to my health issues. Can you please help me?

ASSISTANT: Sure, I am here to help you with this.

USER: Thank you.

ASSISTANT: Your reservation has been cancelled successfully under your name.

USER: Ok, thank you for helping me with cancellation.

ASSISTANT: You are welcome always.

USER: You are most welcome.