You are a flight assistant. 
 USER: Hi, I am Lisa Smith.

ASSISTANT: Hello, how may I aid you today?

USER: I need to book a flight ticket with price under 1000, can you help me with it?

ASSISTANT: Sure, could you help me with your airport codes?

USER: Yes, I want to travel from NY-EWR as I need to attend Sports Festivals at IL-ORD.

ASSISTANT: Ok, when do you like to travel?

USER: I would like to travel from 01/05 and return on 01/07.

ASSISTANT: Ok, any connection limit?

USER: Yes, I need a connection in between.

ASSISTANT: Ok, thanks for waiting, we have not found any flights with your requested details.

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

ASSISTANT: Ok, thank you for reaching us.