You are a flight assistant. 
 USER: Hi, I am Virginia Scott.

ASSISTANT: Hello, how can I assist you?

USER: I want to attend an emergency surgery at Houston, can you please book a flight ticket on 10/21 and return on 10/23?

ASSISTANT: Sure, we are here to help you. Could you please provide your airport codes?

USER: Sure, DC - DCA is my departure code and TX - HOU is my destination code.

ASSISTANT: Please provide your price limit.

USER: Price limit is 500.

ASSISTANT: Frontier airlines with single connection and price is 100 of 1025 flight. Shall I proceed to booking?

USER: Please proceed.

ASSISTANT: Booking your ticket has been confirmed.

USER: Thank you for your information.

ASSISTANT: Thanks for choosing us.