You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need to change my recent reservation. Please help me with that.

ASSISTANT: Sure, let me know your name to check further?

USER: I am Carol Baker.

ASSISTANT: Sorry, no reservation found in our records with your name.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us, have a good day.