You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: Due to my ill health, I am planning to cancel my trip to Dallas. Can you please help me by cancelling my recent reservation?

ASSISTANT: Sure, can you please mention your name for further processing?

USER: My previous reservation has done with my name Deborah Lee.

ASSISTANT: Ok, please wait. Your ticket has been successfully cancelled as per your name.

USER: Thank you for cancelling my ticket, happy with your service.

ASSISTANT: You are welcome always.