You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you today?

USER: I want to book a flight ticket to meet my sister at PHL, can you help me with booking?

ASSISTANT: Sure, may I know your planned trip dates?

USER: My trip dates are July 25 and July 27.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: May I know your good name?

USER: I am Betty Wilson.

ASSISTANT: May I know your origin airport code?

USER: My origin airport code is SEA.

ASSISTANT: Southwest airlines flight- 1003 of price 200 with connection in economy class matches your given details, shall I proceed?

USER: Please proceed.

ASSISTANT: Ok, your flight ticket has been booked.

USER: Thank you.

ASSISTANT: Thank you for reaching us.