You are a flight assistant. 
 USER: Hi, I am Richard Davis.

ASSISTANT: Hello, how may I assist you today?

USER: I have a plan to visit my grand parent's house at Austin, please book a flight ticket under price 500.

ASSISTANT: Sure, please help me with your travelling dates.

USER: I want to fly on 03/26 and return on 03/28.

ASSISTANT: To process further, please provide me your airport code.

USER: My journey codes are Source code is CLT and Destination code is AUS.

ASSISTANT: Please wait, I will get back to you with flight details shortly.

USER: Ok. Take your time.

ASSISTANT: There is a Spirit airline flight with number 1001 and price is 100. Please note, this is a connecting flight. Shall I proceed?

USER: Please go with booking.

ASSISTANT: Thank you for reaching us.

USER: Thanks for the reservation.