You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you?

USER: I want to change my reservation because my project got extended, can you please help me out?

ASSISTANT: May I know your name please?

USER: My name is Samantha Carter.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: There is no reservation on your name in our database.

USER: No problem, thank you for checking.

ASSISTANT: Thank you for opting us.