You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Richard Campbell.

ASSISTANT: How can I assist you?

USER: I would like to book a flight ticket to attend international conference about religious festivals at Los Angeles, CA - LAX. So, please book me a flight ticket from DFW.

ASSISTANT: Please provide your journey dates?

USER: Sure, I need to travel on 11/04 and 11/06.

ASSISTANT: Please mention connections limit?

USER: I need a halt.

ASSISTANT: No flights are available.

USER: No issue, thank you.

ASSISTANT: Thank you.