You are a flight assistant. 
 USER: Hi. I am Patrick Davis.

ASSISTANT: Hello, how may I aid you today?

USER: Can you help me in changing my recent reservation?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Please wait for a minute.

USER: Sure.

ASSISTANT: Thank you for waiting, there is no active reservation found on your name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for availing us.