You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I made an earlier reservation to attend a board meeting due to some technical issues it got postponed.

ASSISTANT: Sure, I can aid you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: My name is Janet Robinson.

ASSISTANT: Please wait a while.

USER: Sure, I will wait.

ASSISTANT: Thank you for waiting, but I am sorry to say that, there is no active reservation found with your name in our database to change it.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for choosing us.