You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Anna Harris. Due to some problems my trip was cancelled so can you please cancel flight ticket?

ASSISTANT: Sure, please wait for a moment to check your details.

USER: Ok, thank you.

ASSISTANT: No reservation found on your name in my database.

USER: Oh! It's ok no problem.

ASSISTANT: Thank you for reaching us, have a nice day.

USER: Thank you for your information.