You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I help you today?

USER: I am Justin Perez, I want to book a direct flight to meet my sister at Dallas.

ASSISTANT: Ok.

USER: Can you book a flight with in fare of 200?

ASSISTANT: I will help you by reserving a seat with in your price limit. Can you help me by sharing the trip dates?

USER: I will fly on 01/09 and return on 01/11.

ASSISTANT: Let me know your source place and Dallas airport code.

USER: My source point is CA-LAX and Dallas airport code is TX-DFW.

ASSISTANT: Please standby, I will revert to you.

USER: Sure.

ASSISTANT: Delta airline with a stop over in between your journey is available on respective date of your travel. Can I proceed to book with a fare of 200?

USER: No, I need a direct flight to Dallas.

ASSISTANT: Ok, there is no direct flight to your route.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.