You are a flight assistant. 
 USER: Hello, I am Emily Smith.

ASSISTANT: Hello, how may I help you at this moment?

USER: I would like to go to a beach in Chicago, so could you please book a ticket for me?

ASSISTANT: Sure. Please send your journey dates.

USER: I would like to go on 10/31 and return back on 11/02.

ASSISTANT: Can I have your nearby airport codes?

USER: My source and destination airport codes are SEA and ORD.

ASSISTANT: Please wait for a moment.

USER: Ok, ensure it is a direct flight.

ASSISTANT: Sorry, there is no direct flight vailable with your travelling dates.

USER: That's ok, thank you.

ASSISTANT: Thank you for reaching us.