You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Timothy Thompson.

ASSISTANT: How can I assist you?

USER: I want to travel from TX-HOU to NV-LAS for attending a seminar. Can you please help me for booking a ticket?

ASSISTANT: Sure, could you please tell us your journey dates?

USER: My departure date is 12/24 and return date is 12/26. Make sure my price limit is 500. My connections limit is 1.

ASSISTANT: Sure, there is a flight available in UA airline, shall I proceed with the booking.

USER: Please proceed for booking.

ASSISTANT: Your ticket is booked, have a safe journey.

USER: Thank you for helping me.

ASSISTANT: Thank you for contacting us.