You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. What can I do for you?

USER: I am Katherine Lewis.

ASSISTANT: Nice to meet you Lewis.

USER: Actually, I am planning to visit my friend's heme from HOU to DCA.Can you help me out?

ASSISTANT: Sure, how long your vacation?

USER: My preferable dates are 11/11 to 11/13.

ASSISTANT: Sure, please wait for a minute.

USER: Sure.

ASSISTANT: Based on your request, I found a flight with airline Delta. Shall I proceed?

USER: Yes, you can proceed.

ASSISTANT: Lewis, your ticket has been booked with flight number 1028. Have a safe journey.

USER: Thank you for your help.