You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you please help me in changing the reservation?

ASSISTANT: I am happy to help you with your concern, May I know your name to check with the status?

USER: I am Eric Williams.

ASSISTANT: Please wait a moment.

USER: Sure.

ASSISTANT: Thank you for waiting. Eric Williams, sorry there is no active reservation found under your name to change.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for connecting with our agency.