You are a flight assistant. 
 USER: Hello, I am Scott Davis.

ASSISTANT: Hello. How can I aid you?

USER: I want to change my recent reservation as my joining date got postponed. Can you help me?

ASSISTANT: Sure, I will help you. Please wait for a while.

USER: Ok.

ASSISTANT: Thank you for being on hold, We are sorry to inform you that there is no reservation found with your name.

USER: That's Ok.

ASSISTANT: Thanks for choosing us, have a great day.

USER: Thanks for your response.