You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: Can you please help me in changing my reservation, as my exams got cancelled?

ASSISTANT: May I know your good name please?

USER: Sandra Thompson here.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: There is no reservation found with your given name.

USER: Ok, no problem. Thank you for checking out.

ASSISTANT: Thank you.