You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Paul Allen.

ASSISTANT: How may I guide you today?

USER: I would like to change my reservation as I am having an occasion, can you please help me out?

ASSISTANT: Ok, I am here to help you. Can you please give me some time to check your reservation status?

USER: Thank you. Sure.

ASSISTANT: Sorry for the inconvenience, there is no active reservation found with your name in our database.

USER: Ok no problem, thank you for checking the status.

ASSISTANT: Most welcome. Thank you for reaching us.