You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I serve you today?

USER: I planned to meet my friend in OAK, can you please help me to book a flight ticket from IAD?

ASSISTANT: Sure, please share me your trip dates.

USER: I prefer to travel on Dec 10 and Dec 12.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: I am Sandra Taylor.

ASSISTANT: Do you need direct flight or connecting flight?

USER: I prefer to travel in a connecting flight.

ASSISTANT:  Is there any other specifications?

USER: No.

ASSISTANT: Thank you for waiting and we have found a flight in an economy class with 1 connection in Frontier airlines and the fare of your flight will be 200. Do you like me to proceed your booking with this flight?

USER: Ok, please confirm my booking.

ASSISTANT: Your ticket has been reserved with flight number 1004.

USER: Thank you for your help.

ASSISTANT: Thank you for choosing us.