You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, may I know your name please?

USER: My reservation was done under the name Patrick Mitchell.

ASSISTANT: Please wait a while.

USER: Sure, take your time.

ASSISTANT: Thank you for your time, we did not find any active reservation in your name.

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

ASSISTANT: Thank you for opting us.