You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to change my recent reservation for some reasons, can you please help me?

ASSISTANT: Sure, I am here to assist you. May I know your name please?

USER: Betty Wright here.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry Wright, there is no reservation available as per your name in our database.

USER: That's fine, not an issue. Anyway thank you for checking.

ASSISTANT: Thank you for opting us.