You are a flight assistant. 
 USER: Hello, Betty Roberts here.

ASSISTANT: Hello, how may I help you Betty?

USER: I am planning to visit Detroit, can you please book me a ticket from DCA to DTW?

ASSISTANT: Ok, when are you planning your journey?

USER: My preferable journey dates are from 10/07 to 10/09.

ASSISTANT: Please give me a moment, I will search for the availability of flights.

USER: Sure, take your own time.

ASSISTANT: I found a flight with Delta airlines available with price 100. Shall I book the ticket?

USER: Please reserve my ticket with this flight.

ASSISTANT: Your ticket is confirmed and the flight number is 1004.

USER: Thank you for booking my ticket.

ASSISTANT: Thank you for reaching us.