You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Due to some problems my trip was cancelled so can you please cancel my flight ticket?

ASSISTANT: Sure, please help me with your name to check.

USER: Thank you for your response, my name is Virginia Wilson.

ASSISTANT: Thank you very much. Please wait for a while, let me check your reservation status in our database.

USER: Ok.

ASSISTANT:  I am very sorry to inform you that there is no reservation found under your name in our database.

USER: Oh! It's ok, no problem. Thank you for your information.

ASSISTANT: Thank you for choosing us.