You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to travel from JFK to PHL. Can you please help me in ticket booking?

ASSISTANT: Sure, we are glad to help you. May I know your travelling dates?

USER: Thank you. My travel dates are from 12/08 to 12/10.

ASSISTANT: Can I know your connection limit?

USER: My connection limit is 1.

ASSISTANT: Can I know your class preference?

USER: No.

ASSISTANT: Can you please let me know your name?

USER: Myself Joseph Campbell.

ASSISTANT: There is a flight on Spirit airline, flight number 1020 with the fare of 100. Can I proceed?

USER: May I know the flight depart and return time?

ASSISTANT: Depart time is 6:00AM and return time is 0:00AM.

USER: I want evening flight for both ends.

ASSISTANT: Ok, wait a minute.

USER: Ok.

ASSISTANT: Sorry, there are no flights available in the evening time.

USER: It's ok, thank you.

ASSISTANT: Thank you for choosing us.