You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any assistance from us?

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

ASSISTANT: Sure, I will help you. Can you please tell me your name?

USER: My reservation was done under the name Jessica Nelson.

ASSISTANT: Sorry, there is no reservation with your name to change further.

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

ASSISTANT: Thank you for choosing us, have a great day.