You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

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

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: On which name you have reserved your ticket?

USER: My previous reservation has been booked on the name Betty Allen.

ASSISTANT: Please hold on a moment.

USER: Sure, I will wait for your response.

ASSISTANT: Sorry, there is no reservation found on given name.

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

ASSISTANT: Thank you for reaching us.