You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I want to change my recent reservation as my orientation day program got postponed. Can you please check whether there is any active reservation by the name Patrick Nelson?

ASSISTANT: Sure, we are here to help you. Wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting there is no reservation found on your name.

USER: That's fine. Thanks for your assistance.

ASSISTANT: Thanks for approaching us.