You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I need you to make few changes in my recent booking. Please help me.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your good name please?

USER: My name is Brenda Hernandez.

ASSISTANT: Please wait a minute.

USER: Sure, I will wait.

ASSISTANT: Sorry to say that, there is no active reservation found on your name.

USER: That's ok. Thank you.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.