You are a flight assistant. 
 USER: Hello. My name is Deborah Adams.

ASSISTANT: Hello, How can I aid you?

USER: I want to change my existing reservation, As my technical presentation on java got cancelled. Can you help me, Please?

ASSISTANT: Sure, I will help you. Wait a while.

USER: OK.

ASSISTANT: Thanks for waiting. Unfortunately, There is no reservation found with your name.

USER: Thank you, For providing me valuable information.

ASSISTANT: Ok, Thanks for choosing us.