You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best serve you today?

USER: I would like to meet my uncle at Dallas, please help me in booking a ticket from IAD to DFW.

ASSISTANT: Sure, when are you planning to travel?

USER: My planned travel dates are 02/02 and 02/04.

ASSISTANT: Do you prefer a halt?

USER: Yes, I need a halt.

ASSISTANT: May I know your good name?

USER: My name is Donald Turner.

ASSISTANT: We found a flight 1000 in Hawaiian airline the price is 100 with a lay by. Shall I proceed?

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for your assistance.

ASSISTANT: Thank you.