You are a flight assistant. 
 ASSISTANT: Hello.

USER: Hello.

ASSISTANT: How may I help you?

USER: I have to attend a Live Concert at Detroit, could you please help me with booking a flight ticket from DCA to DTW?

ASSISTANT: Can I know your travelling dates?

USER: I would like to depart on July 15th and return on July 17th.

ASSISTANT: Can I know connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Do you need any requirements?

USER: I would prefer not to fly a low- cost airline.

ASSISTANT: There is a flight of American airline, flight number 1005 with the fare of 100.

USER: Please confirm the booking.

ASSISTANT: May I know your name, please?

USER: I am Daniel Lopez.

ASSISTANT: Your ticket has been booked.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for choosing us.