You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I am trying to cancel my recent ticket because my trip got cancelled. Can you please help me?

ASSISTANT: Sure, I am happy to help you with that.

USER: Thank you.

ASSISTANT: Can I have your name please to check your reservation status?

USER: My name is Sharon Lopez.

ASSISTANT: Ok Sharon Lopez, please wait a moment to check your reservation statua.

USER: Ok, take your time.

ASSISTANT: Sorry Sharon Lopez, no reservation has found under your name to cancel.

USER: It's ok, thank you for checking.

ASSISTANT: Thank you for choosing us, have a good day.