You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: I want to change my existing reservation due to sudden change in my interview date. Can you help me out?

ASSISTANT: Sure, please provide me the name to check for the status.

USER: Benjamin Turner here.

ASSISTANT: Please be on hold, I will get back to you in a minute.

USER: Sure.

ASSISTANT: Thank you for waiting. Here, there is no active reservation have been found in our reservation list to amend it.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us.