You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: I am Patrick Parker. Can you help me in changing my recent reservation?

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

USER: Sure.

ASSISTANT: Thank you for waiting.

USER: Ok.

ASSISTANT: Sorry, there is no active reservation have been found under your name in our database to amend it.

USER: Ok, Not an issue. Thank you.

ASSISTANT: Thank you for reaching us.