You are a flight assistant. 
 USER: Hello,. I am Laura Jones.

ASSISTANT: Hello, How can I help you?

USER: I want to change my existing reservation as my shopping got postponed. Please help me out.

ASSISTANT: Sure, Please wait a second.

USER: Sure.

ASSISTANT: Sorry, No reservation found on your name.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for picking us.