You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I aid you?

USER: Myself Raymond Rodriguez. As a student I need to attend a meeting at San Francisco, will you help me in booking the flight ticket?

ASSISTANT: Sure, I am happy to help you in booking. May I know your airport codes?

USER: My source airport code is DCA and destination airport code isSFO.

ASSISTANT: Ok, can you please provide your meeting dates to proceed further?

USER: My travelling dates are 06/16 and 06/18.

ASSISTANT: Please wait for a while.

USER: Ok, I will wait for your response, hope so you will reach me with a positive answer.

ASSISTANT: Here is a connecting flight from Frontier airlines with a charge of 300, shall I proceed with booking?

USER: That's ok for me, you can proceed with the booking.

ASSISTANT: Your ticket is confirmed with the flight number 1004.

USER: Thank you for helping me.

ASSISTANT: Welcome, have a great day.