You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I have an earlier reservation to sign a new contract for new project, due to some problems it got postponed. Can you aid me to change it?

ASSISTANT: Sure, we are here to assist you. Please provide your good name.

USER: Sure, my name is Charles Martinez.

ASSISTANT: Ok, please give me a minute, I will check the reservation list and revert to you.

USER: Sure.

ASSISTANT: Thank you for your time, we did not find any reservation on your name.

USER: That's Ok, thanks for your assistance.

ASSISTANT: Thank you for connecting with us.