You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I be of your service?

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

ASSISTANT: Sure, I'll try to help you in cancellation.

USER: Thank you.

ASSISTANT: Can I have your name to check the reservation lsit?

USER: My name is Brenda Baker.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: I am very sorry to inform you that there is no reservation found under your name in our database.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for approaching us.