You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What type of assistance do you need from our agency?

USER: I want to change my existing reservation because my final examination is postponed. Can you help me?

ASSISTANT: Sure, I am here to help you in checking your ticket status.

USER: Thank you for accepting my request.

ASSISTANT: Can you please tell me your good name?

USER: Yes, I am Katherine Robinson.

ASSISTANT: Ok, please give me a minute.

USER: Sure.

ASSISTANT: Sorry to inform you, there is no active reservation on your name to change the details.

USER: That's fine, no problem. Thank you for your time.

ASSISTANT: You are welcome. Thank you for consulting us.