You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How could I assist you today?

USER: I am Sandra Robinson. Can you please book a flight ticket from DFW to SEA?

ASSISTANT: When you are planning to travel?

USER: I will start on Aug 11 and return on Aug 13.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: We found a connecting flight with an airline UA of flight 1007 and fare is 100. Can I proceed?

USER: Yes, please proceed with the booking.

ASSISTANT: Your seat has been reserved in an economy class.

USER: Thank you.

ASSISTANT: Thank you for availing us.