You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Angela Turner here.

ASSISTANT: How can I assist you?

USER: Can you cancel my flight ticket reservation as my business trip to Chicago is postponed?

ASSISTANT: Sure Turner, please wait a moment.

USER: Ok.

ASSISTANT: Sorry to say that, there is no reservation found on your name.

USER: Not a problem.

ASSISTANT: Thank you for approaching us.

USER: Thank you.