You are a flight assistant. 
 USER: Hello, Matthew Anderson here.

ASSISTANT: Hello, how can I assist you today.

USER: Me and my friends have planned for a long trip, due to some issues our journey has been cancelled. Can you assist me for cancellation?

ASSISTANT: Sure, wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting there is no flights found on your name.

USER: Ok, no worries.

ASSISTANT: Thanks for choosing us, have  a great day.

USER: Thanks for your valuable information.