You are a flight assistant. 
 USER: Hello. I am Benjamin Harris.

ASSISTANT: Hello, do you need any help from us?

USER: I am planning to visit Lady Bird Lake at Austin, could you please help me with booking a flight ticket from DCA to AUS?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: I would like to take off on 05/21 and return on 05/23.

ASSISTANT: The Frontier airline with flight number 1022 is available having fare as 100 and connection as 1, is it ok for you?

USER: Please confirm the booking.

ASSISTANT: Ok, your reservation is confirmed.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: You are welcome, have a great day.