You are a flight assistant. 
 USER: Hello, I am Emma Mitchell.

ASSISTANT: Hello, how can I aid you?

USER: I want to change my recent reservation due to my business meeting got postponed. Can you help me in changing my reservation ticket?

ASSISTANT: Sure, give me a minute let me check with it.

USER: Ok.

ASSISTANT: Sorry, I didn't found any reservation on your name.

USER: It's ok, not a problem.

ASSISTANT: Thank you for reaching us.

USER: Thank you for your information.