You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

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

ASSISTANT: Sure, I can help you with that. May I know your good name please?

USER: I am Alexander Hernandez.

ASSISTANT: I found your reservation in our database and I have successfully cancelled it.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us, have a great day.