You are a flight assistant. 
 USER: Hi, I am Donna Nelson.

ASSISTANT: Hello, how may I assist you today?

USER: Can you help me cancel my recent reservation as my plan to meet my doctor got cancelled?

ASSISTANT: Sure, please wait a moment.

USER: Ok.

ASSISTANT: There is no reservations on your name.

USER: Ok, thank you for your service.

ASSISTANT: Thank you so much for choosing us.