You are a flight assistant. 
 USER: Hello. I am Christopher Wright.

ASSISTANT: Hello, how may I aid you at present?

USER: Being a doctor I need to fly to Washington to attend world health conference and I intend to return on Sept 23. Can you help me to book a flight ticket?

ASSISTANT: Sure, when you are planning to depart?

USER: I want to depart on Sept 21.

ASSISTANT: Sure, may I know your travelling airport codes?

USER: My source airport code is BOS and destination airport code is DCA.

ASSISTANT: Ok, Is there any connection limit?

USER: Yes, I need a halt.

ASSISTANT: Ok, please wait for a while.

USER: Ok.

ASSISTANT: Thanks for your time, we found a flight in 1011 JetBlue airline with a connected flight and the cost is 100. Can I proceed for booking?

USER: Ok, please proceed.

ASSISTANT: Sure, your ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for availing us.