You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you please help me in changing my recent reservation?

ASSISTANT: Sure, I am here to help you. Can you help me with your name?

USER: Ok, myself Stephanie Carter.

ASSISTANT: Sorry, there is no reservation found on your name.

USER: Ok, fine thank you for checking.

ASSISTANT: Thank you for choosing us, have a nice day.