You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Scott Anderson here.

ASSISTANT: How can I help you?

USER: I am looking for a flight ticket with afternoon as the return time. So can you book the flight ticket for me?

ASSISTANT: Can I know your airport codes?

USER: The airport codes are from LAS to EWR.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Let me know your travelling dates.

USER: My travel dates are from 15 May to 17 May.

ASSISTANT: Found ticket with Delta airlines for price 100.

USER: I am ok with the price. You can book the flight ticket.

ASSISTANT: Your ticket is booked in an economy class having flight number 1011.

USER: Thank you.

ASSISTANT: Thank you.