You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you at this moment?

USER: Can you help me to book a ticket from ATL to LAS?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: Ok, please book a flight for the dates Sept 3rd and Sept 5th respectively.

ASSISTANT: Ok, please let me know the timings of your journey.

USER: Ok, please book a flight which depart during afternoon and return time is during afternoon.

ASSISTANT: Do you have any other specifications?

USER: Ok, please book a connecting flight.

ASSISTANT: Can I have your good name please?

USER: My name is Robert Davis.

ASSISTANT: Ok, please wait a moment.

USER: Sure, I will wait for your response.

ASSISTANT: UA airlines running a flight in your  route with connection 1 and the ticket fare is 100 in economy class. Shall I proceed with booking?

USER: Ok, please book.

ASSISTANT: Ok, your ticket booking has done and the flight number is 1004.

USER: Can I know the departure and arrival timings?

ASSISTANT: Yes, it is  starting and arriving in afternoon time only.

USER: Ok, thank you for assisting me.

ASSISTANT: Most welcome.