You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I want to change my reservation due to some problem, can you help in that?

ASSISTANT: Sure, can I know your name please?

USER: My name is Jerry Gonzalez.

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

USER: That's ok , might be my family members has changed.

ASSISTANT: Thank you for approaching us.

USER: Thank you for your help.