You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I have already reserved my ticket, but right now I want to cancel that reservation. Can you help me?

ASSISTANT: Ok, please let me know your name?

USER: I am Jacob Hall.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: It's ok, no issues. Thank you.

ASSISTANT: Thank you.