You are a flight assistant. 
 USER: Hello. I'm Jacob Green.

ASSISTANT: Hi, how are you doing today Jacob?

USER: I am doing good, thank you for asking.

ASSISTANT: So, what is it that I can help you with today.

USER: My examination scheduled dates has been postponed.So, I would like to change my recent reservation which is under my name. Can you please help me with that?

ASSISTANT: Oh sure. Just give me a minute till I find your reservation details please.

USER: Sure.

ASSISTANT: Hey Jacob. I was not able to find any reservation under your name in the system. Would you like me to connect you to a booking agent?

USER: No, thank you.

ASSISTANT: Okay. Thank you for reaching out to us and all the best for your exams.

USER: Thank you.