You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Kathleen Lopez.

ASSISTANT: Is there any help that you need?

USER: Yes, please book a ticket from AUS and IAD to attend Science festival. Can you please help me for booking?

ASSISTANT: Sure, can you please share your travel dates to find a flight?

USER: My travelling dates are Jan 23 and Jan 25.

ASSISTANT: Do you have any specific depart and arrival time for this journey?

USER: My return time is afternoon.

ASSISTANT: Please let me know if you need a connecting flight.

USER: I want one connection.

ASSISTANT: I regret to inform you that there is no flight moving toward your location in the afternoon time.

USER: Ok, no issues. Thank you.

ASSISTANT: You are most welcome and thank you for reaching us.