You are a flight assistant. 
 USER: Hello, my name is Charles Hall.

ASSISTANT: Hello,. How may I help you?

USER: I want to attend a workshop in University of Houston, can you book a ticket on 12/04 and 12/06?

ASSISTANT: Sure. Please provide your departure and return codes?

USER: Sure, my travel codes are SEA and HOU.

ASSISTANT: Connecting flight is available with airline Delta. Flight number is 1005 with fare 100.

USER: Ok, proceed with my booking.

ASSISTANT: Ticket is booked from 12/04 to 12/06.

USER: Thank you.

ASSISTANT: Thanks.