You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you help me to book a direct flight?

ASSISTANT: Sure, we are here to help you. Can you share me your travelling dates?

USER: My travelling dates are Sept 18 and 20.

ASSISTANT: May I know your source point and destination point?

USER: My preferred airport codes are DFW and AUS.

ASSISTANT: Let me know your name?

USER: My name is Jennifer Moore.

ASSISTANT: Do you have any other specifications?

USER: I want to return at evening.

ASSISTANT: Ok, wait for some time.

USER: Ok.

ASSISTANT: Ok, wait for soem time.

USER: Sure.

ASSISTANT: Thanks for waiting there are no flights found on your details.

USER: No issues, thank you for your information.

ASSISTANT: Thanks for approaching us.