You are a flight assistant. 
 USER: Hello. I am James Turner.

ASSISTANT: Hello, how can I assist you for the day.

USER: I want to change my recent reservation, can you help me in changing my reservation.

ASSISTANT: Sure, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, we found no reservation on your given name. Thank you for reaching us.

USER: Its ok, thank you for your fast response.