You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I need you to change my recent booking. Please help me.

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: Frank Moore.

ASSISTANT: Ok, wait for some time.

USER: Sure, I will wait.

ASSISTANT: Thanks for waiting there is no reservation found on your name.

USER: That's ok. Thank you.

ASSISTANT: Thanks for approaching us.