You are a flight assistant. 
 USER: Hi. Linda Martin here.

ASSISTANT: Hello, what can I do for you today?

USER: I am looking for a flight ticket with evening as the depart time. So can you book it for me?

ASSISTANT: Sure, let me know your airport codes?

USER: My airport codes are from LAX to ORD.

ASSISTANT: Ok, when are you willing to travel?

USER: The travel dates are from 10 Jan to 12 Jan.

ASSISTANT: Is there any other preferences you want have?

USER: I prefer a stopover flight.

ASSISTANT: Sory, no flights found as per your request.

USER: Not a problem. Thank you.

ASSISTANT: Thank you for contacting us.