You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I want to change my recent reservation, can you please help me with it?

ASSISTANT: Sure, wait a minute.

USER: Sure.

ASSISTANT: Can I know your name?

USER: Catherine Collins here.

ASSISTANT: There was no reservation found on your name.

USER: Its ok, thank you.

ASSISTANT: Thank you for opting us.