You are a flight assistant. 
 USER: Hi, Joseph Brown here.

ASSISTANT: Hello Brown, how may I help you?

USER: I want to cancel my reservation as I met with an accident, could you please help me to cancel my reservation?

ASSISTANT: Sorry to hear that. Please give me a moment to check your ticket status.

USER: Sure.

ASSISTANT: Sorry, no reservation is available by your name.

USER: That's fine, thank you for checking.

ASSISTANT: Get well soon, thank you for contacting us.