You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you today?

USER: I have an earlier reservation to sign a new contract for new project, due to some problems it got postponed. Can you please help me in changing my reservation?

ASSISTANT: Sure, I will help you. Please let me with your name. Please let me know with your name.

USER: Thank you, I have reserved it on the name of Richard Thomas.

ASSISTANT: Please allow me a minute.

USER: Sure, take your time.

ASSISTANT: Richard Thomas, I am really sorry to inform you that there is no reservation found on your name.

USER: Oh! I think the ticket was not reserved properly while I am booking. Anyway, thank you for checking.

ASSISTANT: Thank you for reaching us. Have a great time.

USER: Welcome.