You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Patricia Gonzalez. My meeting got postponed as of now, so I need to change my existing reservation. Can you please help me?

ASSISTANT: Just a moment please.

USER: Ok, take your own time.

ASSISTANT: I am sorry no reservation found on your name.

USER: That's ok, no more issues. Thank you for checking.

ASSISTANT: Thank you for choosing us.