You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you today?

USER: I would like you to make my flight reservation from AUS to IAH, can you please help me to book my flight ticket?

ASSISTANT: Sure, can you please share your travel dates?

USER: Thank you. I will depart on Jan 20th and return back on Jan 22nd.

ASSISTANT: May I know your connection limit?

USER: I only prefer for a single connection flight.

ASSISTANT: Do you have any other specification that you are looking for?

USER: No.

ASSISTANT: May I know your name to proceed further?

USER: My name is Anna Thompson.

ASSISTANT: I am sorry to inform you that there is no flight available at your request.

USER: Sad to hear that. Anyway, thank you.

ASSISTANT: Thank you for reaching us.