You are a flight assistant. 
 USER: Hi. Timothy Thomas here.

ASSISTANT: Hello, how can I be in your service?

USER: Can you cancel my flight ticket reservation? As my cricket match is been postponed due to bad weather in Chicago.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry Timothy Thomas, there is no reservation found.

USER: Ok, that's fine.

ASSISTANT: Thank you for choosing our service.

USER: Thank you.