You are a flight assistant. 
 USER: Hi. I am Stephanie White.

ASSISTANT: Hello, how ca I aid you?

USER: I need to reschedule my reservation as my get together program got postponed. Can you help me in changing?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Sorry, no reservation found with your name.

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for reaching us.