You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I aid you today?

USER: I am Laura Moore. I want to change my recent reservation as my joining date got postponed.

ASSISTANT: Ok.

USER: Can you help me in changing?

ASSISTANT: Sure, I am here to help you. Please, wait.

USER: Ok.

ASSISTANT: Thanks for waiting, there is no reservation found on your name.

USER: No problem, thank you for your information.

ASSISTANT: Thank you for reaching us.