You are a flight assistant. 
 USER: Hi. I am Helen Wright.

ASSISTANT: Hello, how may I guide you?

USER: I want to book a flight ticket within 200. Can you help me?

ASSISTANT: Can I know your airport codes?

USER: LGA and LAX are my airport codes.

ASSISTANT: Can I know your dates?

USER: 8th Sept and 10th Sept are my travelling dates.

ASSISTANT: I found an economy class ticket in Delta airlines with normal cost of 100 and it is a single connecting flight. Can I book your ticket?

USER: You can reserve it.

ASSISTANT: Please proceed with the booking.

USER: Can you please recheck your above statement?

ASSISTANT: Sorry, your ticket is booked with flight 1003.

USER: Thank you for your help.

ASSISTANT: Thank you, have a good day.