You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I guide you?

USER: I am Alexander Anderson. I have to travel PHL to meet my new office manager to discuss about the office employees, can you book a ticket from DCA?

ASSISTANT: Sure, may I know your travelling dates?

USER: I am planning to travel on 12/28 and back on 12/30.

ASSISTANT: Give me a minute.

USER: Sure.

ASSISTANT: There is a connecting flight with fare 100 in airline Delta, the number is 1010. Can I book it?

USER: Do proceed with booking.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for your help in my ticket booking.

ASSISTANT: Thank you for reaching us.