You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Justin Lopez here. I'm planning to visit Atlanta, can you please book a ticket from ORD to ATL?

ASSISTANT: Sure, may I know your travelling dates please?

USER: Sure, my planned departure and return travel dates are 3rd and 5th of October.

ASSISTANT: Do you prefer any halt?

USER: Yes, I need 1 halt.

ASSISTANT: Wait a moment please.

USER: Sure, make a note that I prefer normal-cost airlines.

ASSISTANT: Justin Lopez, there are no flights available in your route.

USER: Oh! That's ok, thank you for giving the information.

ASSISTANT: Thank you for reaching us.