You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: I need to meet my relatives in Seattle, can you please reserve flight ticket from DFW and SEA?

ASSISTANT: Sure, I am at your service.

USER: Thank you for for your kind reply.

ASSISTANT: May I know exactly when are you planning your trip to Seattle?

USER: I am planning travel  in May,11 and May,13.

ASSISTANT: Do you have any restriction with connecting flight?

USER: I need a direct flight for my travel.

ASSISTANT: Which airline do you prefer to travel?

USER: No, I don't have any other preferences.

ASSISTANT: Is there any other preference do you have?

USER: No.

ASSISTANT: Please share your name to proceed further.

USER: Myself Stephen Hill.

ASSISTANT: We have a direct flight from American airlines, number 1001 and the price 200. Shall I proceed?

USER: Please proceed with the reservation.

ASSISTANT: Your ticket is confirmed in the economy class.

USER: Thank you for reserving my flight ticket.

ASSISTANT: Thank you.