You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am David Edwards. I would like to go TX-DFW to meet my cousin, can you please book me a flight ticket on 12/17?

ASSISTANT: Sure, may I know your return date?

USER: Sure, I will back on 12/19.

ASSISTANT: Please share your origin point?

USER: I am from IL-ORD.

ASSISTANT: Do you need any connection limit?

USER: Yes, I need a halt.

ASSISTANT: Thank you for your details, there are no flights found with the specified dates.

USER: Ok, no problem. Thank you for your time.

ASSISTANT: Thank you for opting us.