You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I guide you today?

USER: Brenda Mitchell here. Due to unfortunate reasons I have to cancel my flight ticket booking. Please help me.

ASSISTANT: Sure, we are here to help you with cancellation.

USER: Thank you.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thanks for your time, there was no reservation found on your name to cancel it.

USER: Oh! I have forgot. I have asked my dad to cancel the ticket, he might have cancelled it. Thank you for trying to help me.

ASSISTANT: Thank you for choosing us.