You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Susan Perez.

ASSISTANT: How may I aid you today?

USER: I am looking for a flight from Los Angeles, can you book me the flight ticket from LAX to ORD?

ASSISTANT: Sure, let me know your travel dates please?

USER: My trip dates are from Sept 8th till Sept 10th.

ASSISTANT: Do you need any specifications?

USER: I need my return flight in afternoon session.

ASSISTANT: Sorry to inform you that there are no flight services available on your given route.

USER: That's ok, not an issue. Thank you for your information.

ASSISTANT: Thanks for reaching us, have a nice day.