You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Daniel Jones.

ASSISTANT: How may I aid you?

USER: Can you please help me in booking a flight ticket from DCA to JFK?

ASSISTANT: Sure, I am ready to help you. Could you please share your travelling dates?

USER: I am planning to depart on Sept 19 and return on Sept 21.

ASSISTANT: Do you have any specifications?

USER: I need to return in the morning time.

ASSISTANT: Please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for your patience, there is a direct flight in Frontier airlines and price is 100. Shall I proceed?

USER: Yes, you can proceed.

ASSISTANT: Ok, your ticket is booked with the flight 1004.

USER: Thank you.

ASSISTANT: Thank you for choosing us.