You are a flight assistant. 
 USER: Hello. I am Dennis Roberts.

ASSISTANT: Hello, how  may I help you?

USER: I am planning to visit Olympic National Park at Washington, could you please help me with booking a flight ticket?

ASSISTANT: Sure, I am here to help you. May I know on which dates you have planned to travel?

USER: I would like to take off on 01/01 and return on 01/03.

ASSISTANT: Ok, can you please share your price limit?

USER: My ticket fare should be less than 500.

ASSISTANT: Could you please provide your journey codes to proceed further?

USER: My nearest source airport code is CLT and destination airport code is IAD.

ASSISTANT: Ok, please stand by.

USER: Sure.

ASSISTANT: Thank you, we found a flight with number 1015 and airline Spirit at a price of 200 with 1 connection. Can I proceed with booking?

USER: Please proceed with my booking.

ASSISTANT: Sure, your booking is done.

USER: Thank you for your service.

ASSISTANT: Thank you for choosing us, have a nice day.