You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: My name is Nancy Wilson.

ASSISTANT: OK, Nancy, how may I help you.

USER: I want to book a ticket from DCA to IAD.

ASSISTANT: Sure, may I know your dates of journey please?

USER: The journey dates are from 04/23 to 04/25.

ASSISTANT: OK, please wait for a moment to check the available ticket for you.

USER: OK fine.

ASSISTANT: The ticket with airline UA and number 1001 with connection limit 1 of cost 100. Shall I book this ticket for you?

USER: OK fine proceed booking my ticket.

ASSISTANT: OK, your ticket has confirmed.

USER: Thank you.

ASSISTANT: Thank you. Have a nice day.