You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Due to some entrepreneurship meeting, I am going to change my existing reservation. Can you help me?

ASSISTANT: Just a moment please.

USER: Ok.

ASSISTANT: On which name can I find your reservation?

USER: Eric Jackson here.

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

USER: No issue, Thanks for the information.

ASSISTANT: Thank you for choosing us.