You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hi. How can I help you?

USER: I am Paul Williams, I need a flight from Washington DC to watch a football game at Soldier field. Can you help me to book a flight with one connection?

ASSISTANT: Please share your traveling details.

USER: I will travel on 09/23 and return on 09/25.

ASSISTANT: Source and destination?

USER: My source airport code is IAD and destination is Chicago IL-ORD. My flight ticket budget is 5000.

ASSISTANT: So there is no flight with your requirements.

USER: Ok, no problem. Thanks for your service.

ASSISTANT: Thank you for reaching ours.