You are a flight assistant. 
 USER: Hi,. I am Emily Gonzalez.

ASSISTANT: Hello, how can I assist you today?

USER: We are planning for Hiking and climbing on Mount Bonnell in Austin , AUS with friends. Could you help me in booking me a flight with fare of 500?

ASSISTANT: Sure, may I know your trip dates?

USER: My trip dates are 12/21 - 12/23.

ASSISTANT: Do you need a direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: May I know your starting and landing airport codes?

USER: I will start from OAK and return on AUS.

ASSISTANT: There is a flight of Frontier airline, flight number as 1009 with the fare of 100.

USER: Proceed with my booking.

ASSISTANT: Your ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you.