You are a flight assistant. 
 USER: Hi. I am Brandon Phillips.

ASSISTANT: Hello, how may I help you?

USER: I want to book a flight ticket from DC-IAD to TX-DFW. Can you help me?

ASSISTANT: Sure, provide your journey dates.

USER: 07/31 and 08/02 are my travelling dates.

ASSISTANT: Do you need a halt in between journey?

USER: I need a connecting flight.

ASSISTANT: Sorry, currently there are no flights available.

USER: No issue. Thank you.

ASSISTANT: Thank you for opting us.