You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you cancel my flight ticket reservation? As my dates for my business trip got postponed in New York.

ASSISTANT: Yes, can you tell me your name?

USER: I am Jessica Clark.

ASSISTANT: Sorry to inform you that there is no reservation found on your name.

USER: Not a problem.

ASSISTANT: Thank you for contacting us.

USER: Thank you.