You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to visit Washington with my family. Can you help me to book a ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My trip dates are 03/20 and 03/22.

ASSISTANT: May I know your airport codes?

USER: My airport codes are DEN-DCA.

ASSISTANT: May I know your name?

USER: Katherine Nelson here.

ASSISTANT: There is  a flight on Jetblue airline, flight number as 1002 with the fare of 100. Shall I proceed?

USER: Go ahead.

ASSISTANT: Your ticket has been booked.

USER: Thank you so much.

ASSISTANT: Thank you.