You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. Can you please tell me how can I assist you?

USER: Owning to an emergency, I want to cancel my recent reservation. Can you please help me out?

ASSISTANT: May I know your name?

USER: Sure, my name is David Adams.

ASSISTANT: Ok, Adams I found your reservation. Shall I proceed to cancel.

USER: Ok.

ASSISTANT: Ok, your ticket has been cancelled.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.