You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Myself Anna Hernandez. I want to cancel my flight ticket due to some problems I am unable to travel so please cancel my flight ticket?

ASSISTANT: Ok, please wait a moment.

USER: Ok, thank you.

ASSISTANT: Sorry to say, there is no reservation found with your name to cancel it.

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

ASSISTANT: Thanks for reaching us.