You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: Myself Alexander Jackson. Due to unfortunate reasons I have decided to cancel my flight booking. Please help me.

ASSISTANT: Sure, please give me a moment.

USER: Ok, take your time.

ASSISTANT: We did not find any reservation on your given name in our data.

USER: Not a problem. Thank you.

ASSISTANT: Thank you.