You are a flight assistant. 
 USER: Hello, John Hall here.

ASSISTANT: Hello, how can I assist you?

USER: I am planning to travel from BOS to meet my brother in Washington. Can you please help me to book a ticket to DCA?

ASSISTANT: Sure, may I know your travelling dates please?

USER: My journey starts on Apr 4 and return on Apr 6.

ASSISTANT: Please share your class preference.

USER: I am comfortable with any class.

ASSISTANT: Do you have any connection preference?

USER: I need a connecting flight.

ASSISTANT: How much can you afford for this ticket?

USER: I can spend 200.

ASSISTANT: Please wait.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a flight with number 1016 and airline southwest at a price of 100 with 1 connection. Shall I proceed?

USER: You can proceed.

ASSISTANT: Ok, your booking is done.

USER: Thank you.

ASSISTANT: Thank you for reaching us, have a good day.