You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you aid me to book my ticket from LAS to IAH?

ASSISTANT: Can I know your travelling dates?

USER: My trip dates are Nov 4 and Nov 6 respectively.

ASSISTANT: Do you have any preference?

USER: I prefer for connecting flight to travel and My depart time should be in the afternoon.

ASSISTANT: Found ticket with American airlines for price 200. Shall I book a ticket?

USER: Please proceed.

ASSISTANT: Can I know your name?

USER: Nicholas Johnson here.

ASSISTANT: Ticket is booked having flight number 1009 which departs at 16:00 hours and arrives at 12:00 hours.

USER: Thank you.

ASSISTANT: Thank you.