You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you?

USER: My name is Richard Williams. I want to attend for a Cultural program in Charlotte, so please book a flight ticket within a price limit of 200.

ASSISTANT: Sure, can I have your location points?

USER: My source is Washington, DC - DCA, destination airport code is NC - CLT.

ASSISTANT: On which dates you need me to book your ticket?

USER: My depart is on 11/12, return is on 11/14.

ASSISTANT: Ok, please give me a moment to check the availability of flights and let you know.

USER: Sure.

ASSISTANT: Thank you for waiting, there is a flight available with price 100 having single connection from flight 1015. Can I proceed?

USER: Yes, please.

ASSISTANT: Richard Williams, your seat is reserved in AA airline.

USER: Thank you for your service.

ASSISTANT: Thank you for contacting us.