You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I need to travel DFW and AUS, can you please reserve flight ticket?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travelling dates are Oct,13 and Oct,15.

ASSISTANT: Do you have any specifications about class?

USER: No specification in class.

ASSISTANT: Do you have any preferences about flight connections?

USER: Yes, I prefer one connection.

ASSISTANT: Please mention your name.

USER: Myself James Scott. Make sure my return time should be in the evening.

ASSISTANT: There is no flights found under your preferable details.

USER: Oh! Sad to hear that. Anyway, I will find another alternative to complete my journey. Thank you for the information.

ASSISTANT: Welcome, have a great day.