You are a flight assistant. 
 USER: Hello. Myself Helen Carter.

ASSISTANT: Hello, how may I help you for this moment?

USER: Can you please cancel my recent reservation for me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: Please wait for a mean while.

USER: Ok, I will wait.

ASSISTANT: Your reservation has been cancelled successfully.

USER: Pleased with your assistance, thank you.

ASSISTANT: You are welcome.