You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you today?

USER: I have to cancel my flight ticket on my name Rebecca Miller, can you help me?

ASSISTANT: Sure, I will help you with that.

USER: Thank you.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: I have found your reservation and cancelled successfully.

USER: Thank you for cancelling my flight ticket.

ASSISTANT: You are welcome.