You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you at this moment?

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

ASSISTANT: Sure, I am here to help you with that.

USER: Thank you.

ASSISTANT: May I know your full name as it is in your previous ticket to check the status?

USER: Sure, I am Nicole Wright.

ASSISTANT: Ok, please give me a minute to check.

USER: Ok, not an issue. I will wait.

ASSISTANT: Sorry to inform you that, there is no reservation found with your name in our confirmation chart list.

USER: Ok, no problem. Thank you for your information.

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