You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I need to change my recent existing reservation due to postpone of my document verification in office. Can you aid me in changing?

ASSISTANT: Sure, may I know your name for checking your status?

USER: Ok, my name is Ashley Garcia.

ASSISTANT: Sorry, no reservation found on your name.

USER: That's not a big problem. Leave it. Thanks for the information.

ASSISTANT: Thank you for reaching us.