You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I am Matthew Gonzalez.

ASSISTANT: Yes Matthew.

USER: Please cancel my previous reservation as I am not able to cancel myself.

ASSISTANT: Sure, I will help you for that. But I did not find any reservations with your name.

USER: Ok, thank you for assisting me.

ASSISTANT: Thank you for reaching us. Have a nice day.