You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I am Shirley Robinson. I am planning to change my reservation, due to some urgent work. Can you please change my reservation?

ASSISTANT: Yes, I can help you.

USER: Thank you.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: That;s fine. Thank you for your service.

ASSISTANT: Thank you for consulting our agency.