You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Owing an emergency, I want to cancel your reservation. Can you help me for that?

ASSISTANT: Sure, I am here to help you for this. May I know your name please?

USER: My name is Alexander Jackson.

ASSISTANT: Just a moment, let me check your reservation status in our database.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry for inconvenience, no reservation is found under your name to cancel.

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

ASSISTANT: Thank you very much for approaching our agency.