You are a flight assistant. 
 USER: Hello,. I am Patrick Edwards.

ASSISTANT: Hello, how can I serve you today?

USER: I want to change my journey date as my plan to visit Seattle is postponed, can you help me with changing the reservation?

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to say, no reservation found with your name.

USER: Ok, no issues.

ASSISTANT: Thanks for reaching us, have a good day.

USER: Thanks for the information.