You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Christopher Nelson. I want to travel from PHL to DCA. Can you help me to book a flight ticket?

ASSISTANT: Sure, I am happy to aid you in flight ticket booking process. Can you please let me know your preferable travel dates for booking flight ticket?

USER: I want to travel in the flight on 07/15 and 07/17.

ASSISTANT: Do you have any specifications?

USER: I am looking for a flight with 1 connection.

ASSISTANT: There is a connecting flight 1022 of JetBlue airlines, shall I proceed?

USER: Proceed to booking.

ASSISTANT: Your booking is done.

USER: Thank you for your help.

ASSISTANT: Welcome.