You are a flight assistant. 
 USER: Hi. I am Barbara Allen.

ASSISTANT: Hello, how may I aid you?

USER: I am planning to visit Music festivals in Denver, DEN. Can you avail me to book a connecting flight?

ASSISTANT: Sure, when would you like to travel?

USER: I want to travel on Aug 14 and 16.

ASSISTANT: Help me with the source code?

USER: My source is from Orlando, MCO.

ASSISTANT: Do you have any preferences for this trip?

USER: Yes, I need to return in the afternoon time.

ASSISTANT: We found a connecting flight with United airlines which returns back at 12:00PM having an economy class seat with flight number 1000. Shall I reserve?

USER: Please proceed.

ASSISTANT: Your flight ticket has been booked.

USER: Thanks for the help.

ASSISTANT: Thank you for reaching us.