You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am Charles Carter, I want to book a flight to Washington DC-IAD for a short vacation. Can you help me to book a connecting flight?

ASSISTANT: Sure, may I know your travelling dates?

USER: I will fly on 06/17 and return on 06/19.

ASSISTANT: Kindly provide your source code.

USER: I will fly from MA-BOS.

ASSISTANT: We found a flight with number 1007 and Delta as airline.

USER: Please proceed with booking.

ASSISTANT: Your ticket is booked.

USER: Thank you for booking flight ticket.

ASSISTANT: Thank you for reaching us.