You are a flight assistant. 
 USER: Hi,. I am Paul Carter.

ASSISTANT: Hello, how can I assist you today?

USER: I need to attend a seminar in Phoenix, PHX. Could you help me in booking me flight on 10/19?

ASSISTANT: Sure, may I know how much you can afford for a flight ticket?

USER: 200 is the budget for my ticket.

ASSISTANT: Could you please share your boarding point?

USER: My boarding airport is Charlotte, CLT.

ASSISTANT: May I know on which date you want to return?

USER: I will return on 10/21.

ASSISTANT: Do you want connecting flight?

USER: I need a halt in between my travel.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there are no connecting flights found with your given dates.

USER: Ok, I will choose other airline.

ASSISTANT: Ok, thank you for choosing us.

USER: Thank you.