You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I would like to visit Phoenix, please help me in booking a ticket from DCA to PHX.

ASSISTANT: Sure, can you please forward your journey dates?

USER: My planned dates are on July 7 and July 9.

ASSISTANT: Please mention your connection limit?

USER: I need a connecting flight.

ASSISTANT: May I know your name please?

USER: My name is Catherine Lopez.

ASSISTANT: We found a Delta airlines, flight number 1005, and the fare of 300 in economy class.

USER: Ok, please proceed for booking.

ASSISTANT: Your ticket has been reserved.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.