You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello,. How can I help you?

USER: On the name of Brandon Edwards, book a ticket with 1 connection to meet my friend.

ASSISTANT: Please provide your journey dates?

USER: Journey dates are 12/13 and 12/15.

ASSISTANT: Please provide your journey codes?

USER: Airport codes are Washington, DCA and PHL.

ASSISTANT: No connecting flight is available.

USER: Ok, no problem.

ASSISTANT: Thank you.

USER: Thank you for aiding me.