You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I want to change my flight reservation, can you please help me?

ASSISTANT: Sure, can I know your name please?

USER: Sure, my reservation was done in the name of Patrick Turner.

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

USER: No problem, thank you for the information.

ASSISTANT: Thank you for approaching us.