You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: I am Robert Thomas. I want to book a flight ticket from DFW to LAS. Could you help me in booking?

ASSISTANT: Sure, We are here to make your journey comfort. Can I know your travelling dates?

USER: My travelling dates are from 04/23 to 04/25.

ASSISTANT: Do you need any break?

USER: Yes, I need a break.

ASSISTANT: We found a UA airline, flight number:1011 and the price is 100.

USER: Yes, please proceed.

ASSISTANT: Your flight ticket has been processed.

USER: Thank you for helping me.

ASSISTANT: Thank you for contacting us.