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

ASSISTANT: Hello, Emily. How can I support you?

USER: I need a connecting flight to Dallas to attend for a food festival conference. Can you book me a flight with the price under 500?

ASSISTANT: Sure, I am here to help you with that only. May I know your planning dates?

USER: My travelling dates are from 12/28 to 12/30.

ASSISTANT: Ok Emily, from which airport you would like to take off and landing on?

USER: I want to fly from SFO to DFW.

ASSISTANT: Thank you for sharing your details, hold on for a moment while I am searching a flight for you.

USER: Ok.

ASSISTANT: We are glad to inform you that Delta airline is available on your route with price of 100 only. Can I proceed to book your ticket?

USER: You can proceed with this Delta airline.

ASSISTANT: Successfully your ticket is served in flight number 1026.

USER: Thanks for the help.

ASSISTANT: Have a safe flight, Emily. Thank you for choosing us.