You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you out?

USER:  I am Karen Carter want to travel to NC-CLT to PA-PHL . Can you book a ticket?

ASSISTANT: Sure. Please notify your specifications.

USER: I need a connecting flight within 200.

ASSISTANT: Help me by sending your travelling dates.

USER:  My travel dates are 04/18 and 04/20.

ASSISTANT: Ok. Southwest airlines matches your request to travel. Shall I book with 1011?

USER: Ok, you can proceed.

ASSISTANT: Your ticket is done.

USER: Thank you.

ASSISTANT: Thank you for choosing us.