You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sandra Allen.

ASSISTANT: What help that you need from my side?

USER: I would like to cancel my reservation which is under my name. Can you please help me with that?

ASSISTANT: Sure, please allow me a moment to check it.

USER: Sure, take your time.

ASSISTANT: I have checked based on your request in our booking portal but I got that no flight ticket booking is done on your name.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: You are welcome and have a nice day.