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 happy to help you. May I know your name?

USER: My reservation was done under the name Larry Robinson.

ASSISTANT: Larry Robinson, please wait. Let me check.

USER: Sure, take your time.

ASSISTANT: Larry Robinson, I did not find any reservation under your name in our database.

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

ASSISTANT: You are welcome and have a nice day.