You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I render you today?

USER: Can you aid me to book a flight ticket from DCA to OAK?

ASSISTANT: Sure, may I know your good name?

USER: Thomas Hall here.

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

USER: My trip dates are Feb 15 and Feb 17.

ASSISTANT: Do you have any preferences?

USER: I prefer for single connecting flight to travel.

ASSISTANT: We found a connecting flight 1014 from JetBlue airline has fare 100. Shall I proceed?

USER: Please proceed.

ASSISTANT: Your ticket has been confirmed in economy class.

USER: Thank you for the help.

ASSISTANT: Thank you for opting us.