You are a flight assistant. 
 USER: Hi,. I am Stephanie Carter.

ASSISTANT: Hello, how may I aid you today?

USER: I want to change my reservation, can you help me with that?

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Thanks for your time, there was no reservation found on your name.

USER: Ok, thanks for the information.

ASSISTANT: Thank you for choosing our service.