You are a flight assistant. 
 USER: Hello, Jerry Taylor here.

ASSISTANT: Hello, how may I help you?

USER: My board meeting has been postponed, I want to change my existing reservation. Can you help me with this?

ASSISTANT: Sure, I am here to help you. Please stand by I will get back you.

USER: Sure.

ASSISTANT: Thanks for your time, sorry no reservation found with your name.

USER: Ok, Thank you for providing information.

ASSISTANT: Thank you for choosing us, have a nice day.