You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Patrick Williams.

ASSISTANT: How can I assist you?

USER: I am planning this weekend to participate meeting at Chicago. Could you please help me for booking flight ticket?

ASSISTANT: May I know your nearest origin airport code and destination airport code please?

USER: I will take-off from DEN to reach my destination at ORD.

ASSISTANT: May I know your journey dates please?

USER: I will depart on 11/24 and again I will be return back on 11/26.

ASSISTANT: Wait for a while please.

USER: I required with the single connection flight with the fare of 5000 only. Sure, I will for your response.

ASSISTANT: Williams, there are no flights available with your preferences.

USER: Not an issue, than you for your information. I will choose other way to reach my destination.

ASSISTANT: Thank you for reaching us.