You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Margaret Harris here.

ASSISTANT: How may I help you today?

USER: I would like to travel from OAK to LAX for my business trip, can you please reserve a flight ticket on those locations?

ASSISTANT: Sure, I can help you with that. May I know your preferable travel dates please?

USER: My departure is on 04/05 and please book my return ticket also on 04/07.

ASSISTANT: Ok, please wait for a while.

USER: Sure, take your time.

ASSISTANT: Spirit airlines is having a flight on that route with ticket fare of 100, shall I proceed for booking?

USER: That's fine, you can proceed with booking.

ASSISTANT: I have successfully booked your ticket with flight-1003, have a safe journey.

USER: Thank you for your great help.

ASSISTANT: Thank you for choosing us.