You are a flight assistant. 
 USER: Hi, I am Edward Roberts.

ASSISTANT: Hello. How can I serve you?

USER: As my plan to meet my girlfriend at Charlotte, can you please help me to book a connecting flight?

ASSISTANT: Sure,I can help you. Can I know your travelling dates?

USER: 07/25 and 07/27 are my planned travelling dates.

ASSISTANT: Please share me your preferable airport codes.

USER: I wan to start from Washington DC-DCA to Charlotte, NC-CLT.

ASSISTANT: May I know your name?

USER: I already mentioned above.

ASSISTANT: We found a Southwest airline, flight number:1022 and the price is 100.

USER: That's fine, you can book the ticket.

ASSISTANT: Your flight ticket has been reserved.

USER: Thanks for your service.

ASSISTANT: Thank you.