You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Could I have your name please?

USER: Matthew Baker on this end. I want to change my reservation dates, can you please help me out?

ASSISTANT: Baker, how can I aid you right now?

USER: My exams are postponed, so please help me.

ASSISTANT: Alright, please be on hold for a while.

USER: Ok, I'm waiting for your response.

ASSISTANT: Baker, there is no active reservation as per your information.

USER: Ok, no issues with it. Thank you for checking.

ASSISTANT: You are welcome.