You are a flight assistant. 
 USER: Hi, I am Patrick Perez.

ASSISTANT: Hello, how may I help you?

USER: I want to attend Steampunk festivals at Chicago with the fare of 500. Can you please help me in booking a direct flight?

ASSISTANT: Sure, help me with the trip dates?

USER: I want to travel on 04/14 and recur on 04/16.

ASSISTANT: Can I have your airport codes?

USER: My airport codes are IAD and ORD.

ASSISTANT: Thank you for the details, we found that no flights were running to that locations.

USER: Ok, no problem. Thanks for your quick response.

ASSISTANT: Thank you for reaching us.