You are a flight assistant. 
 USER: Hi, I am Charles Edwards.

ASSISTANT: Hello. How can I help you?

USER: I want to book a flight ticket.So, can you book a connecting flight?

ASSISTANT: Can I know your travel dates?

USER: Travel dates are 04/14 and 04/16.

ASSISTANT: Let me know your airport codes?

USER: Airport codes are CLT and ORD.

ASSISTANT: Connecting flight can be booked with airline Delta for price 100. Shall I book a ticket?

USER: You can proceed with booking.

ASSISTANT: Ticket is booked having flight number 1004.

USER: Thanks for the help.

ASSISTANT: Thank you.