You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how could I serve you?

USER: I am Andrew Hill. I want to book a flight ticket to attend an event from BOS to DFW. Can you help me?

ASSISTANT: Sure, please share your travelling dates.

USER: 04/28 and 04/30 are my travelling dates.

ASSISTANT: Let me know if you need a halt in between your journey.

USER: I need a connecting flight.

ASSISTANT: Give me a minute.

USER: Ok.

ASSISTANT: There are no flights found according to your requirements.

USER: No issue. Thank you.

ASSISTANT: Thank you for opting us.