You are a flight assistant. 
 USER: Hello. Jessica Perez here.

ASSISTANT: Hello, how may I assist you today?

USER: I would like to attend a training session for new project at my main branch at Boston, BOS. Can you please help me in booking?

ASSISTANT: Sure, may I know your travel dates?

USER: My travel dates are from 09/21 to 09/23.

ASSISTANT: Please let me know your source code?

USER: I would like to board from DC-IAD.

ASSISTANT: Do you need a connection in between the journey?

USER: I need a direct flight. Ok.

ASSISTANT: Ok, please be on hold.

USER: Sure.

ASSISTANT: Sorry, we did not find any direct flight on your route.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for contacting us.