You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: I want to cancel my recent reservation, can you please help me out?

ASSISTANT: Sure, may I know your name?

USER: My name is Melissa Edwards.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, no reservation found on your name.

USER: It's ok, thank you for the information.

ASSISTANT: Thank you for choosing us.