You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

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

ASSISTANT: Sure, just a moment please.

USER: Ok, take your time.

ASSISTANT: I am sorry no reservation found on your name.

USER: That's ok, thank you for your information.

ASSISTANT: Thank you for choosing us.