You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you today?

USER: I am going to meet my team lead at Chicago this week day. Can you please help me in reserving the ticket from IAH to ORD?

ASSISTANT: Sure, help me with the trip dates?

USER: I am planning my trip on Sept 23, and again I will return back on Sept 25.

ASSISTANT: Do you have any preferences?

USER: I am flexible with direct flight.

ASSISTANT: May I know your name please?

USER: Myself Amy Wilson.

ASSISTANT: Thank you for your details, we do not found any flights running in your specified routes.

USER: Not a big deal, anyhow thank you very much for your service.

ASSISTANT: Thank you for reaching us.