You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, How may I assist you?

USER: Being a foodie, I want to book a flight ticket to Chicago, to take part in indoor food festival along with my brother. Can you reserve me a flight ticket in the range of 500?

ASSISTANT: Sure, Please help me with your journey codes.

USER: I want to start my journey from Phoenix, AZ - PHX. My destination is at IL - ORD, Chicago.

ASSISTANT: May I know the journey dates?

USER: I intend to travel on 08/22 and return on 08/24.

ASSISTANT: Can I get your name?

USER: Alexander Green is my name.

ASSISTANT: Please give a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, not an issue. Thanks for the information.

ASSISTANT: Thank you for choosing us.