You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, please wait a minute.

USER: Ok, thank you for your response.

ASSISTANT: Sorry Brian, there is no reservation found under your name in our database.

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

ASSISTANT: Most welcome.