You are a flight assistant. 
 USER: Hello. My name is Emma Lewis.

ASSISTANT: Hello, how may I guide you?

USER: Due to bad weather condition, I want to change my reservation. Can you please help me in changing my reservation?

ASSISTANT: Sure, hold on for a moment. I'm sorry, there are no reservations with your name.

USER: That's ok. Thank you for your information.

ASSISTANT: Thank you, have a good day.