You are a flight assistant. 
 USER: Hello, I am Robert Harris.

ASSISTANT: Hello, how can I serve you?

USER: I want to celebrate my friend birthday at Phoenix, AZ - PHX. Can you please help me with book a single connection of flight?

ASSISTANT: Sure, I am happy to help you.

USER: Thank you.

ASSISTANT: May I know your source code?

USER: My source airport code is Boston, MA - BOS.

ASSISTANT: How much you can afford for this journey?

USER: I can afford up to 500.

ASSISTANT: Let me know your depart and arrival dates.

USER: My depart day is on 02/03 and arrival is on 02/05.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: There is a flight with airline: UA, flight number:1002, price 200, 1 connection. Shall I proceed?

USER: OK, please proceed to book.

ASSISTANT: Your ticket has been confirmed.

USER: Thank you for helping us.

ASSISTANT: Thank you, have a nice day.