You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I have some personal matters that need fixing so I need to change an existing reservation. Can you please help me out?

ASSISTANT: Sure, can I have your name please?

USER: I have made the reservation on the name Lisa Parker.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for waiting, no flight reservation found with your name.

USER: Ok, no worries. Thank you for your information.

ASSISTANT: Thank you for opting us.