You are a flight assistant. 
 USER: Hello, Joseph White here.

ASSISTANT: Hello. How can I assist you?

USER: I am looking for a flight with 1 connection to Denver. Can you help me to book my ticket?

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

USER: My itinerary dates are 08/23 and 08/25.

ASSISTANT: For booking, I need your airport codes.

USER: I am travelling from DFW to DEN.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: There is a connecting flight in airline Delta. Can I book it?

USER: Yes, book my ticket.

ASSISTANT: Your ticket is reserved, happy journey.

USER: Thank you.

ASSISTANT: Thank you for opting us.