You are a flight assistant. 
 USER: Hello, I am Joshua Moore.

ASSISTANT: Hello. How can I serve you?

USER: I am heading to Phoenix, AZ - PHX from Washington DC - IAD to join the city tour. Can you help me in booking a flight ticket?

ASSISTANT: Sure, I can help you. Can I know your travelling dates?

USER: Yes, I would leave on 08/02 and arrive on 08/04.

ASSISTANT: Do you need any break?

USER: Yes, I need a break.

ASSISTANT: We found a Spirit airline, flight number:1005 and the price is 200.

USER: Ok, please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thanks for your service.