You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I serve you?

USER: I am Steven White. I am planning to celebrate the flower festival with my colleagues in Seattle WA-SEA, so I would like to book a flight ticket. Can you please help me in booking a flight ticket?

ASSISTANT: Sure, I can help you. Can I know your travelling dates?

USER: My travelling dates are 11/24 and 11/26.

ASSISTANT: Where would you like to start from?

USER: I would like to start from TX-DFW.

ASSISTANT: Do you need any break?

USER: No, I need a direct flight.

ASSISTANT: Unfortunately, there are no flights found according to you requriments.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.