You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you for today?

USER: Here Jacob Lopez. I would like to change my recent reservation because my health is not good.

ASSISTANT: Yes, I can help you. Give me a moment.

USER: Sure, take your own time.

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

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for contacting our agency.