You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you?

USER: Please help me to book a flight ticket from JFK to MSP.

ASSISTANT: Sure, May I know your travelling dates?

USER: My journey dates are from Aug, 20 to Aug, 22.

ASSISTANT: Do you have any connection limit?

USER: I do not have any specifications, Please book my ticket quickly.

ASSISTANT: May I know your name?

USER: Patrick Thompson.

ASSISTANT: Sorry, there are no flights found with your data.

USER: Thank you.

ASSISTANT: Thank you.