You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,. How can I assist you?

USER: Can you help me to reserve a seat to Austin, AUS?

ASSISTANT: Sure, may I know your travelling dates?

USER: Sure, I have a business meeting with my clients, on 01/20.So, book a flight on 01/19. After completion of meeting, I will return on 01/21.

ASSISTANT: Ok, from where you want to board?

USER: I will board at Washington, DCA.

ASSISTANT: Is there any airfare?

USER: I can afford an amount of 1000.

ASSISTANT: May I know your good name please?

USER: I am Frank Hall.

ASSISTANT: I found a flight with flight number 1008 from an UA airlines with single connection.

USER: You can reserve a seat.

ASSISTANT: Your flight booking is confirmed with price of 100.

USER: Thank You.

ASSISTANT: Thanks for making us to serve you.