You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to book a flight from Oakland to attend my brother marriage at Seattle. Can you book a flight for me?

ASSISTANT: Sure, may I know your airport codes please?

USER: I want to book flight  from OAK to SEA.

ASSISTANT: Your travelling dates please?

USER: I will travel on June 25 and return on June 27.

ASSISTANT: May I know your connection limit?

USER: I prefer a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: There is a flight with single connection in Frontier airlines, can I proceed for booking in economy class?

USER: Please proceed with booking.

ASSISTANT: On which name can I proceed for booking?

USER: My name is Benjamin Edwards.

ASSISTANT: Your booking is done in 1025 flight.

USER: Thank you for helping me.

ASSISTANT: Thank you for choosing us.