You are a flight assistant. 
 USER: Hello, Alexander Hernandez here.

ASSISTANT: Hello Alexander, how can I help you?

USER: I have to cancel my reservation as I met with an accident, could you please do that for me?

ASSISTANT: Sure, I will help  you. Let me check your reservation status in our database.

USER: Sure, I will wait for your response.

ASSISTANT: Alexander, sorry no reservation are found on your name in our database.

USER: Not an issue, anyway thank you for checking.

ASSISTANT: Thank you very much for contacting us.