You are a flight assistant. 
 USER: Hello, I am Jessica Martin.

ASSISTANT: Hello, how may I best support you now?

USER: I want to cancel my reservation due to a sudden change of my plan to visit my hometown. Can you help me with the cancellation?

ASSISTANT: Sure, I am here to help you. Please wait a moment.

USER: Sure.

ASSISTANT: Sorry there is no reservation found on your name.

USER: Ok, no problem. Thank you for your response.

ASSISTANT: Thanks for contacting us. Have a nice day.