You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I oblige you today?

USER: Can you help me to book a flight ticket from DCA to HOU?

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My trip dates are Oct, 4 and Oct, 6.

ASSISTANT: Do you have any specifications?

USER: I need connecting flight.

ASSISTANT: On what name, do I need to reserve the ticket?

USER: Justin Taylor here.

ASSISTANT: We found a connecting flight 1001 from Delta airline with a fare 100. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you.

ASSISTANT: Thank you for choosing us.