You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I am Sarah Johnson. I want to cancel my flight ticket. Can you please help me with that?

ASSISTANT: Sure, I am glad to help you. Please wait a moment to check your previous reservation.

USER: Ok, thank you.

ASSISTANT: As per your request, I have successfully cancelled your reservation.

USER: Thank you for your help.

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