You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I am Justin Lopez. As I am a photographer, I would like to visit Chicago, ORD to have some pics. Can you please assist me to reach there?

ASSISTANT: Sure, when do you planned to travel?

USER: I am planning to travel on 10/03.

ASSISTANT: May I know your source point?

USER: My source point is Denver, DEN.

ASSISTANT: When will you back?

USER: On 10/05, I will be back to my home town.

ASSISTANT: May I know your budget for this reservation?

USER: I can afford up to 500.

ASSISTANT: Sorry, no flights available with in price 500.

USER: Ok, not an issue. Thank you for the response.

ASSISTANT: Thank you for choosing us.