You are a flight assistant. 
 USER: Hello, I am Nancy Roberts.

ASSISTANT: Hello. How may I aid you today?

USER: Will you be my helping hand in booking a flight ticket from Washington, DCA to Dallas & Fort Worth, DFW?

ASSISTANT: Sure. Can you please share the travel dates?

USER: My schedule dates of journey is 09/04 to 09/06.

ASSISTANT: Ok. Do you have any other specifications?

USER: Yes, there should be a lay by. Price should not exceed 1000.

ASSISTANT: Ok. We found a flight which matches your request. 1003 is the flight number.

USER: You can book this flight.

ASSISTANT: Frontier airline is available.

USER: Thank you for your help.

ASSISTANT: Your reservation is done.

USER: Thank you.

ASSISTANT: Thank you.