You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: Myself Robert Thomas. I want to cancel my flight ticket due to some problems I am unable to travel in flight so can you please cancel my flight ticket?

ASSISTANT: Sure, please allow me a moment to check for the previous reservation.

USER: Ok.

ASSISTANT: Robert, I found your reservation and successfully cancelled your reservation.

USER: Thank you for your help.

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