You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Charles White. I would like to change my recent reservation.

ASSISTANT: Sure, will you please give me a moment?

USER: Sure.

ASSISTANT: There is no reservation found under your name.

USER: No issue, thank you for the time.

ASSISTANT: Welcome, have a great day.