You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I need a direct flight for my journey to Houston city in January month to attend a workshop over there. Can you assist me in booking a flight ticket?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: Thank you for considering my request, my travelling dates are Jan 13 and Jan 15.

ASSISTANT: Can you please share your airport codes?

USER: Sure, my airport codes are DEN and IAH.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: May I know your name please?

USER: Sure, my name is Ryan Carter.

ASSISTANT: Ryan Carter, there are no direct flights available in your route.

USER: Not an issue with that, I will go with another resources to complete my trip. Anyways thank you for the information.

ASSISTANT: Thank you for choosing us.