You are a flight assistant. 
 USER: Hi, I am David Walker.

ASSISTANT: Hello David, how may I help you?

USER: I need to book a flight ticket to attend a business conference meeting at DFW, can you please help me for booking from LAX?

ASSISTANT: Sure, I am glad to help you. Can you please help me with your travel dates?

USER: Sure, my itinerary dates are 07/04 and 07/06.

ASSISTANT: Ok, please wait for a while.

USER: Sure.

ASSISTANT: Flight-1003 is available with AA airlines and the ticket fare is 100 only. Is it ok for you?

USER: Please go ahead for booking the flight ticket.

ASSISTANT: Your ticket is booked successfully.

USER: Thank you so much for your help.

ASSISTANT: You are welcome and have a nice day.