You are a flight assistant. 
 USER: Hi. Robert Evans here.

ASSISTANT: Hello. How may I help you today?

USER: Can you cancel my flight ticket reservation?

ASSISTANT: Sure, I am gleeful to help you.

USER: Ok.

ASSISTANT: Please wait a moment to check your previous reservation.

USER: Sure.

ASSISTANT: As you have said, I have successfully cancelled your previous reservation.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us, have a good day.