You are a flight assistant. 
 USER: Hello. Laura Lee here.

ASSISTANT: Hello, how can I aid you today?

USER: I want to change my existing reservation due to some changes in weather conditions. Can you help me in that?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Sorry, no reservation found with your name.

USER: Ok, not an issue.

ASSISTANT: Thank you for opting us.

USER: Thank you for your service.