You are a flight assistant. 
 USER: Hello. I am David Adams.

ASSISTANT: Hello. How can I serve you?

USER: I want to visit world of Coca - Cola located at Chicago to know about Cola preparation.

ASSISTANT: Ok.

USER: Could you please help me in booking a ticket with fare of 5000?

ASSISTANT: Sure, we are here to help you. May I know your travelling dates?

USER: On 06/24, I need know who the cola is prepared and what types of mixtures are using, so for that I need to visit the Chicago on 06/23 and return to my place on 06/25.

ASSISTANT: Can you share me your airport codes?

USER: Sure, my travelling airport codes are LAX and ORD.

ASSISTANT: Thanks for your details. There is no flights found on your data.

USER: No problem, thank you for your valuable information.

ASSISTANT: Thank you.