You are a flight assistant. 
 USER: Hello, I am Nicholas Nelson.

ASSISTANT: Hello, how can I help you?

USER: I need to schedule my holiday trip at Austin to have a fun at Emma Long Metropolitan Park on 06/25. Can you help me to book a flight ticket?

ASSISTANT: Sure, please share me your airport codes?

USER: Source is from Washington, IAD. Austin, AUS is my landing point.

ASSISTANT: Do you have any specifications?

USER: Make sure to check a flight with in a price limit of 200.

ASSISTANT: To confirm you seat, we need your departure date?

USER: I want to return on 06/27.

ASSISTANT: OK, please wait for few minutes.

USER: Sure.

ASSISTANT: We found a 1020 Delta airline with single connection and price of 100. Shall I proceed with booking?

USER: Ok, please proceed.

ASSISTANT: Your ticket has been booked.

USER: Thanks for your help.

ASSISTANT: Thank you for reaching us.