You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I have an earlier reservation to sign a new contract for new project, due to some problems it got postponed. Can you help me to change my reservation on the name of William Jackson?

ASSISTANT: Sure, we are here to help you. Please wait for a while, I will check the reservation on your name.

USER: Thank you. Sure, I will wait.

ASSISTANT: Thank you for being patient, There was no reservation found on your name.

USER: Ok,not an issue. Thanks for your information.

ASSISTANT: Thank you for approaching us.