You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello. How can I aid you?

USER: I am president of South Indian association at Chicago, so we are planning a small meeting for celebration of South Indian festival.

ASSISTANT: Sure, I can help you.

USER: Thank you.

ASSISTANT: May I know your name?

USER: My name is Edward Davis.

ASSISTANT: Please share me your airport codes.

USER: DEN and ORD are my airport codes.

ASSISTANT: Can I know your travelling dates?

USER: My travel dates are 09/15 and 09/07.

ASSISTANT: Give a minute.

USER: Ok.

ASSISTANT: Thank you. Unfortunately, there are no flights found according to your requirements.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for consulting us.