You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Deborah Lee.

ASSISTANT: How may I serve you at this time?

USER: I am planning to visit Golden Gate Park at San Francisco, could you please help me with booking a flight ticket?

ASSISTANT: Yes, I can help you. May I know your preferable planning trip dates?

USER: I would like to take off on 07/27 and return on 07/29.

ASSISTANT: May I know your source and destination airport codes?

USER: My nearest source airport code is DFW and destination airport code is SFO.

ASSISTANT: Please wait for a moment to find the flight on your route.

USER: Sure, take your time.

ASSISTANT: One of the top airlines AA airlines is providing a flight with a connecting flight of 1 in your journey. Shall I confirm your ticket booking?

USER: Please proceed with the booking if the ticket fare is less than 500.

ASSISTANT: Ok Lee, the ticket fare is 100 and your ticket booking is successfully confirmed on your journey dates. Have a happy journey.

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

ASSISTANT: Thank you for your valuable time in reaching us.