You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I support you?

USER: I am Carolyn Hill want to travel to CA-LAX to meet my friends from DC-DCA. Can you book a ticket?

ASSISTANT: Sure, when are you planning to make your trip?

USER: My planned dates are 06/03 and 06/05.

ASSISTANT: How much fare are you expecting?

USER:  Make sure price should not exceed 500.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT: We found a Frontier airline going on your way with flight number 1021 and the fare is 200. Shall I go ahead?

USER: Ok, you can proceed.

ASSISTANT: Your reservation has been done.

USER: Thank you for booking.

ASSISTANT: Thank you for choosing us.