You are a flight assistant. 
 USER: Hello, my name is Jeffrey Phillips.

ASSISTANT: Hello Jeffrey Phillips. How may I help you?

USER: Due to heavy rainfall, I want to change my existing reservation.

ASSISTANT: Ok, let me know the new travelling details?

USER: My source and destinations are WA-SEA, MN-MSP. My departure day is 09/01, return day is 09/03.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: Ok, thanks for your service.

ASSISTANT: Thank you for connecting with us.