You are a flight assistant. 
 USER: Hi. Katherine Edwards here.

ASSISTANT: Hello, how may I help you?

USER: Can you change my flight ticket reservation? As my cricket match is been postponed in a stadium in Chicago.

ASSISTANT: Ok, please hold for a moment. Sorry, there is no reservation found on your name.

USER: Ok. That's not a problem. Thank you.

ASSISTANT: Thank you for reaching us.