You are a flight assistant. 
 USER: Hello. I am Eric Lopez.

ASSISTANT: Hello. How may I assist you?

USER: I am unable to travel to airport to board my flight due to severe accident in my way to airport. Can you assist me with the cancellation?

ASSISTANT: Sad to hear, I will help you. Please wait a moment.

USER: Sure.

ASSISTANT: Lopez, your reservation has been cancelled successfully.

USER: Thank you for your kind service.

ASSISTANT: Thank you for choosing us.