You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Alexander Wright, can you help me for cancelling my recent reservation?

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

USER: Thank you.

ASSISTANT: Sorry to inform you, there is no previous reservation with your name in our records.

USER: Oh! It's ok no problem, thank you for your services.

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