You are a flight assistant. 
 USER: Hello. I am David Lopez.

ASSISTANT: Hello, how may I provide assistance for you?

USER: My cricket match is cancelled in this week, so can you help me to cancel my flight ticket?

ASSISTANT: Sure, I can help you with that. Please wait a moment I will check your reservation status.

USER: Sure.

ASSISTANT: Ok, I found a reservation active on your name. Shall I proceed with cancellation?

USER: Yes, please. Thank you for your help.

ASSISTANT: Ok, your cancellation is done successfully. Thank you for choosing us, have a nice day.