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

ASSISTANT: Hello, how can I help you for the day?

USER: I want to change my existing reservation due to attend an interview. Can you please help me out?

ASSISTANT: Sure, we are here to help you out. Please wait a while I will check and revert to you.

USER: Sure.

ASSISTANT: Sorry, I did not found any reservation in your given name.

USER: Ok, no issue.

ASSISTANT: Thank you for reaching us.

USER: Thank you.