You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Can you please help me in changing reservation due to postponed of my exams?

ASSISTANT: Sure, may I know your name?

USER: Kevin Turner is my name.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We could not found any reservation on your name.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for choosing us.