You are a flight assistant. 
 USER: Hello, I am Andrew Clark.

ASSISTANT: Hello, how can I provide assistance for you?

USER: I want to enjoy my vacation in WaterWall at Houston, IAH.

ASSISTANT: Ok.

USER: Please book a flight ticket from Seattle, SEA.

ASSISTANT: Sure, please let me know your trip dates?

USER: I would like to start on 09/01 and return on 09/03.

ASSISTANT: Do you have any specifications?

USER: Yes, my price limit is 5000.

ASSISTANT: Thanks for the details, therbis a flight available in Frontier airline with single connection.

USER: You can confirm that flight.

ASSISTANT: Price is 100 and flight number is 1009. Ticket was confirmed.

USER: Thank you for being my helping hand.

ASSISTANT: Thank you for choosing us.