You are a flight assistant. 
 USER: Hi, Nicholas Harris here.

ASSISTANT: Hello, how can I help you today?

USER: I want to book a flight ticket on 02/23 and return on 02/25, can you help me with booking please?

ASSISTANT: Sure, kindly mention your airport codes?

USER: Sure, my airport codes are Seattle, WA-SEA and Austin, TX-AUS.

ASSISTANT: oK, please wait a moment.

USER: Ok.

ASSISTANT: There is a flight with your requirement, airline is Spirit with price 300. Shall I proceed with booking?

USER: Yes, please.

ASSISTANT: Your booking is done.

USER: Thank you.

ASSISTANT: Thanks for reaching us.