You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Karen Campbell.

ASSISTANT: How may I assist you?

USER: I want to enjoy the beautiful view from Lake Travis in Austin - AUS, can you please reserve a flight ticket from ORD?

ASSISTANT: Sure, I am ready to help you. Could you please share your travel dates?

USER: I will board on Apr 28th and will return back on Apr 30th.

ASSISTANT: Do you have any airline preferences?

USER: No, I don't have any airline preference.

ASSISTANT: May I know your connection limit?

USER: I am fine with one connecting flight.

ASSISTANT: Do you need economy or business class?

USER: I am fine with any class.

ASSISTANT: Do you have any specifications?

USER: I want to depart in the afternoon.

ASSISTANT: Sorry, there are no flights found on your travel dates.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for approaching us.