You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I would like to travel from EWR to HOU, can you help me to book my flight ticket?

ASSISTANT: Sure, I am happy to help you. Can I have your travelling dates?

USER: My travel dates are Apr 21 and Apr 23.

ASSISTANT: Do you have any lay by in between journey?

USER: Yes, I need a lay by in between my journey.

ASSISTANT: Is there any other specifications for you?

USER: I would like to prefer economy class flight ticket.

ASSISTANT: On which name would you like me to book the flight?

USER: Barbara Carter.

ASSISTANT: Delta Airlines is providing direct flight with the ticket fare of 200 and depart time is 4:00 hours, arrival time is 17:00 hours. Shall I proceed?

USER: Please proceed to book my flight ticket in this airlines.

ASSISTANT: Ok, your ticket is reserved in an economy class and the flight number is 1027.

USER: Thank you.

ASSISTANT: Thank you for availing us.