You are a flight assistant. 
 USER: Hello, I am Frank Miller.

ASSISTANT: Hello, how may I aid you?

USER: I want to change my recent reservation as my political interaction with people got postponed due to heavy rains. So can you please help me in that?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please stand by.

USER: Sure.

ASSISTANT: Thanks for your time, there is no active reservation found in your name to change.

USER: Ok, thank you for sharing the information.

ASSISTANT: Thank you for choosing us.