You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: Melissa Harris here. I want to cancel my recent reservation due to some personal issues, so please help me in this issue?

ASSISTANT: Sure, I am glad to help you in flight ticket cancellation. Please allow me a moment to check it.

USER: Ok, take your own time.

ASSISTANT: Thank you for being on hold, I have checked based on your request in our booking portal but it is showing that there is no reservation found for the user name to cancel it.

USER: That's fine, thank you for your service.

ASSISTANT: You are most welcome and thank you for reaching our agency.