You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: Dennis Robinson here, can you please help me in booking the ticket from SFO to JFK? As I'm planning to visit Statue of Liberty.

ASSISTANT: May I know on which dates you are willing to travel?

USER: My planned departure and return travel dates are 03/03 and 03/05.

ASSISTANT: Sorry there are no flights on your route.

USER: Fine, thank you for giving the information.

ASSISTANT: Thank you for opting us.