You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I need to change my recent reservation due to my exams, can you help me in changing the reservation?

ASSISTANT: May I know your name please?

USER: I am Edward Hall.

ASSISTANT: I am sorry no reservation found on your name.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you.