You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Angela Smith here.

ASSISTANT: How can I assist you today?

USER: Can you cancel my flight ticket reservation? As my cricket match is been postponed to some other dates in Chicago.

ASSISTANT: Sure, I can help you with that. Please wait for a while.

USER: Sure.

ASSISTANT: Smith, there is no reservation found under your name to do cancellation.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for choosing us, have a great day.