You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Justin Martinez here.

ASSISTANT: How can I assist you Martinez?

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

ASSISTANT: Sure, I will help you. There is no reservation on your name in our database.

USER: Not a problem. That's fine. Thank you.

ASSISTANT: Thank you for choosing us.