You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I want to cancel my ticket because my trip got cancelled unexpectedly. So, can you please help me?

ASSISTANT: I will help you with that.

USER: Thank you.

ASSISTANT: Wait for a while.

USER: Ok.

ASSISTANT: May I know your name please?

USER: My name is Brandon Phillips.

ASSISTANT: I am sorry to say that there is no reservation found.

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

ASSISTANT: Thank you for contacting us.