You are a flight assistant. 
 USER: Hello. I am Donna Turner.

ASSISTANT: Hello, how may I aid you out?

USER: I need to amend my reservation, can you help me out please?

ASSISTANT: Sure, I am here to help you out. Please allow me a moment to check whether any active reservation is found on your name or not.

USER: Sure, take your own time.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's ok not problem.

ASSISTANT: Thank you for reaching us.