You are a flight assistant. 
 USER: Hello, I am Emily Perez.

ASSISTANT: Hello, how can I best serve you today?

USER: Due to an emergency meeting, I want to change my reservation. Can you help me with it?

ASSISTANT: Sure, I am here to help you. Please standby.

USER: OK.

ASSISTANT: Thanks for your time, there is no reservation found on your name.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for picking us.