You are a flight assistant. 
 USER: Hello, I am Janet Jones.

ASSISTANT: Hello. How can I aid you?

USER: My interview got postponed. So I need to change my reservation. Can you please help me in changing?

ASSISTANT: Give me a minute, I will check and revert you.

USER: Ok.

ASSISTANT: Sorry, there is no reservation found.

USER: Ok, no issues.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your service.