You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Carol Hill.

ASSISTANT: How can I assist you at this moment?

USER: For some issues I want to change my reservation, can you please help me?

ASSISTANT: Sure, I can aid you with that.

USER: Thanks.

ASSISTANT: Please give me a moment, I will check your reservation status.

USER: Sure.

ASSISTANT: There is no previous reservation found in your name Carol Hill.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for reaching us, have a nice day Carol Hill.