You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Jack Walker here.

ASSISTANT: How can I assist you?

USER: Can you book a connecting flight to Dallas for my business trip?

ASSISTANT: Ok, may I know your traevling dates?

USER: My travel dates for the journey are 02/10 to 02/12.

ASSISTANT: Can you please mention your journey codes?

USER: And the airport codes for the journey are AUS to DFW. My price limit is less than 200.

ASSISTANT: Sorry, no flights found on your preferable dates.

USER: Ok, not a  problem. I will check with other airlines.

ASSISTANT: Thank you for reaching us.

USER: Thank you.