You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to book a ticket from ORD to LAX. Could you book a ticket?

ASSISTANT: Sure, can you please mention your departure and arrival dates of your journey?

USER: Travelling dates are Feb, 21 and Feb, 23.

ASSISTANT: Is there any connection limit for you?

USER: I would prefer connecting flight.

ASSISTANT: Are there any other specifications?

USER: I would like to return in the afternoon.

ASSISTANT: Please help me with your name for booking.

USER: My name is Mary Rodriguez.

ASSISTANT: Sorry, no flights are available in this route as per your requested dates.

USER: Thanks.

ASSISTANT: Thank you for reaching us.