You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I made a appointment with the my family doctor, but the appointment date has been changed due to the busy schedule, so can you please help me in changing my recent reservation?

ASSISTANT: Sure, may I know your name please?

USER: The reservation is done with the name Thomas Anderson.

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

USER: No problem, I think it has been done in other agency.

ASSISTANT: Thank you for choosing us.

USER: Any way thank you for your information.