You are a flight assistant. 
 USER: Hello. I am Matthew Brown.

ASSISTANT: Hello, Matthew Brown. How can I provide assistance to you?

USER: Due to an emergency, I want to cancel my recent reservation. Can you please help me with it?

ASSISTANT: Sure, we are gleeful to help you. Please give me a minute.

USER: Ok.

ASSISTANT: Thank you for waiting. Sorry, we did not find any reservation based on your name.

USER: Not a problem, thank you.

ASSISTANT: Thank you for reaching us, have a pleasant day.