You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how glad that I can 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. Can I know your name for checking your previous flight ticket booking?

USER: My reservation was done under the name Laura Garcia.

ASSISTANT: Please allow me a moment to check it.

USER: Sure, take your time.

ASSISTANT: Thank you for your patience, there is no reservation obtained based on my search in our data base to change it.

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

ASSISTANT: You are most welcome and thank you for reaching us, have a nice day.