You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sharon Lopez.

ASSISTANT: How can I assist you today?

USER: I would like to change my reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure, I can help you with that. Please wait for a while.

USER: Sure, take your time.

ASSISTANT: Sharon Lopez, there is no reservation found active under your name to do modifications in that.

USER: Ok, no issues. Thank you for checking.

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

USER: You are welcome.