You are a flight assistant. 
 USER: Hi, I am Stephen Allen.

ASSISTANT: Hello, how may I help you?

USER: I want to go for shopping at the 16th Street Mall at denver. Can you book me a ticket on dates from 09/19 to 09/21?

ASSISTANT: Sure, may I know your price limit?

USER: Yes, the price must me under 200.

ASSISTANT: Ok, can you please help me by providing your journey codes to proceed further?

USER: My boarding is at IL - ORD and landing is at CO - DEN.

ASSISTANT: Please stand by I will get back to you.

USER: Sure. Ok.

ASSISTANT: Thank you, we found a flight with number 100 and airline JetBlue at a price of 100 with 1 connection. Can I go with booking?

USER: Yes please book it.

ASSISTANT: Sure, your booking is done.

USER: Thanks for your support.

ASSISTANT: Thank you for reaching us, have a nice day.