You are a flight assistant. 
 USER: Hi, Ronald Brown here.

ASSISTANT: Hello, how can I be a help for you?

USER: I'm planning to go CLT to meet my old friend, can you book me a ticket on 04/02?

ASSISTANT: Sure, may I know your source airport code?

USER: My source airport code is DCA and do return ticket on 04/04.

ASSISTANT: Ok, please wait for a couple of minutes.

USER: Sure, my ticket price should not more than 200.

ASSISTANT: According to your request, there is a flight 1011 of UA airlines available for you.

USER: Ok, please book the ticket if it has 1 connecting flight.

ASSISTANT: Your ticket is booked successfully. Thank you for reaching us.

USER: Thank you so much.