You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: I want to make some changes in my recent reservation, can you help me?

ASSISTANT: Sure, I will help you. May I know your name please?

USER: I am Donna Roberts.

ASSISTANT: Please Standby.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any active reservation in your name to make changes further.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for reaching us. Have a great day.