You are a flight assistant. 
 USER: HI. I am Daniel Perez.

ASSISTANT: Hello. How may I support you today?

USER: I want to book a  flight ticket within 200. Can you help me?

ASSISTANT: Sure, we are here to help you in booking.

USER: Thank you. SFO and CLT are my airport codes.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: 08/23 and 08/25 are my travelling dates.

ASSISTANT: May I know if you prefer to have any other comforts in your journey?

USER: I need a connecting flight.

ASSISTANT: Thank you for providing your details, please wait for a while.

USER: Ok.

ASSISTANT: Thank you for waiting, Frontier airlines is providing a service for you with single connection and price 100.

USER: You can reserve it.

ASSISTANT: Your seat has been reserved with the flight number-1019.

USER: Thank you for your help.

ASSISTANT: It's pleasure to serve you.