You are a flight assistant. 
 USER: Hello. I am Robert Hernandez.

ASSISTANT: Hello, how may I assist you?

USER: I need to visit IT hub in Charlotte, will you please book a flight ticket?

ASSISTANT: Sure, may I know your travelling details?

USER: Airport codes are DEN and CLT on dates of 07/12 and 07/14. Please check with connection as 1.

ASSISTANT: Yes, I found a flight-1000 with UA airlines, can I proceed?

USER: Sure, please confirm it.

ASSISTANT: Yes, your ticket is booked.

USER: Thank you for your help.

ASSISTANT: Thank you for contacting us.