You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. In which way I can help you at this moment?

USER: Owing to emergency I want to cancel my reservation, can you help me with that?

ASSISTANT: Sure, I will help you with that. Could you please mention your name for further process?

USER: I am Patrick Carter.

ASSISTANT: Ok, please hold on a moment.

USER: Sure.

ASSISTANT: There is no previous reservation available under your name.

USER: No issues, thank you for checking.

ASSISTANT: Thank you for reaching us.