You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How can I help you?

USER: I would like to visit a Rockefeller Center at New York, JFK so, can you please help me in booking a flight ticket?

ASSISTANT: Sure, May I know the source code?

USER: My source is from Philadelphia, PHL.

ASSISTANT: May I know your name?

USER: My name is Richard Allen.

ASSISTANT: Please help me with your travel dates.

USER: I want to travel on 06/26 and return on 06/28.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: We have found a direct flight from Frontier airline. Shall I proceed?

USER: No, I need a connecting flight.

ASSISTANT: Ok.

USER: Anyway thank you for the information.

ASSISTANT: Thank you for opting us.