You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I provide assistance to you?

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

ASSISTANT: Sure, I can help you in that. May I know your good name please to track the details?

USER: Thank you. My reservation was done under the name Robert Miller.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: We are sorry to say that, there is no active reservation found on your name.

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

ASSISTANT: Thanks for reaching us, have a nice day.