You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER: Paul Lee here. Actually, I am planning for a round trip to Los Angels. Can you please help me out with booking of a flight ticket to go there?

ASSISTANT: Sure, I will help you in booking the ticket. May I know your travelling dates please?

USER: I am planning to leave on 11/28 and please book my return ticket also on 11/30.

ASSISTANT: Can I know your airport codes too?

USER: I will prefer LAX as my origin and destination airport respectively.

ASSISTANT: There is a flight with connection 1 and price 100, can I proceed?

USER: That's fine for me to travel, you can proceed with booking.

ASSISTANT: Ok, your ticket has been booked with flight number 1018.

USER: Thank you for your kind help.

ASSISTANT: Thank you for reaching us.

USER: Welcome.