You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: I am Timothy Scott, want to book a flight ticket with price under 500. can you help me with it?

ASSISTANT: We are here to help you. Could you please provide your airport codes?

USER: Airport codes are MSP-DFW.

ASSISTANT: When are you planning to travel?

USER: I would like to travel on 03/23 and return on 03/25.

ASSISTANT: Please share your connection limit.

USER: Make sure the connection limit is 1.

ASSISTANT: Sorry, we found a direct flight.

USER: It's ok. thanks for the help.

ASSISTANT: Ok, thank you.