You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: Can you help me with that change my existing reservation?

ASSISTANT: Sure, we are perky to assist you.

USER: Thank you.

ASSISTANT: Can you please help me with your good name?

USER: My name is Donald Hill.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no active reservation on your name in our data.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for choosing us.