You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I guide you today?

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

ASSISTANT: I will help you with that. May I know your name please?

USER: My reservation was done under the name Shirley Evans.

ASSISTANT: Please wait for a while, I will get back with your flight details.

USER: Sure, take your time.

ASSISTANT: I am sorry to say that there is no reservation found.

USER: That's ok, not an issue. Anyways, thank you for the information.

ASSISTANT: Thank you for contacting us. Have a great day.