You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How may I aid you?

USER: I want to book a flight ticket to my nephew Stephanie Jones to show him Disney land in Los Angeles, LAX.

ASSISTANT: Ok.

USER: Price should be with in 500.

ASSISTANT: Sure.

USER: Source code: BOS.

ASSISTANT: To proceed with booking, I need your travelling dates also.

USER: Dates of travelling are from 12/04 to 12/06.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: There is UA airline with one connecting flight. You have a flight with price 100. Shall I confirm a ticket with flight number 1000?

USER: Reserve my ticket for UA airline.

ASSISTANT: Ok. Your ticket has been reserved with Stephanie Jones.

USER: Thank you for your best service.

ASSISTANT: Thank you. have a nice day.