You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today from my end?

USER: Gregory Evans here. Please help me out in booking the ticket from LAS to IAH.

ASSISTANT: Sure, I am here to help you out. Please provide me your trip dates.

USER: My trip dates will be Jan 2 to Jan 4.

ASSISTANT: Do you have any specifications?

USER: My depart time must be in the afternoon and return time must be in the evening.

ASSISTANT: May I know your connection limit?

USER: Connection limit is 1.

ASSISTANT: Here is a direct flight with airfare 200 i economy class, can I proceed with it?

USER: Please proceed.

ASSISTANT: Your ticket has been booked with 1028 flight in UA airlines.

USER: Thank you.

ASSISTANT: Thank you for reaching us.