You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Christopher Clark here.

ASSISTANT: How can I assist you today?

USER: Can you book a direct flight to Austin for my vacation?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travelling dates for journey are 02/16 to 02/18.

ASSISTANT: Please provide your airport codes that you want to travel.

USER: And my airport codes for boarding the flight are SFO to AUS.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is a flight with price 400 and the connections 0 is available. Shall I confirm your ticket?

USER: You can book the flight ticket.

ASSISTANT: Your ticket is booked. The flight number is 1009 and the airline is JetBlue.

USER: Thank you.

ASSISTANT: Welcome, have a great day.