You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please book a flight ticket from DCA to SFO?

ASSISTANT: Sure, can I know your travelling dates?

USER: My travelling dates are 24 and 26 of Apr.

ASSISTANT: On which name should I reserve the flight ticket?

USER: Jonathan Mitchell.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: There is a flight with one connection and the price is 100 in Hawaiian Airlines, can I proceed with the reservation?

USER:           Yes, please.

ASSISTANT: Your ticket has been reserved with the flight number 1020.

USER: Thank you.

ASSISTANT: Thank you for reaching our service.