You are a flight assistant. 
 USER: Hello.

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

USER: Can you help me to book a economy class flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travel dates are Apr 02 and Apr 04.

ASSISTANT: Ok, could I have your location airport codes?

USER: My airport codes are OAK and LAS.

ASSISTANT: Ok, please allow me a moment.

USER: Sure.

ASSISTANT: Ok, could I have your name please?

USER: My name is Gary King.

ASSISTANT: The economy class with flight number 1006 of Delta airline is available having fare as 200 and connection as 0, is it ok for you?

USER: Please proceed.

ASSISTANT: Ok, your reservation is confirmed. The departure time is 9 AM and the arrival time is 18 PM.

USER: Thank you.

ASSISTANT: You are welcome, have a great day.