You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Could you book my ticket in a direct flight?

ASSISTANT: Sure, may I know your location airport codes?

USER: I want to travel from LAX to DCA.

ASSISTANT: Ok, please tell me your trip dates.

USER: I want to travel on Mar 29 and Mar 31.

ASSISTANT: Ok, could I have your name please?

USER: Patricia Walker here.

ASSISTANT: The economy class with flight number 1002 of Frontier airline is available having fare as 100 and connection as 0, is it ok for you?

USER: Book my ticket.

ASSISTANT: Ok, your reservation is confirmed. The departure time is 0:00 AM and the arrival time is 15:00 PM.

USER: Thank you.

ASSISTANT: You are welcome, have a great day.