You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: My scheduled examination dates has been postponed, could you please help me with changing my recent reservation?

ASSISTANT: Sure, I am here to help you. May I know your name?

USER: My reservation was done under the name Robert Hall.

ASSISTANT: Please wait for a minute.

USER: Sure, take your time.

ASSISTANT: Sorry, there are no reservation found on your name.

USER: Ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for choosing us.