You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you?

USER: I am Samantha Phillips, can you help me to book a direct flight?

ASSISTANT: I am here to help you, please mention your travel dates too.

USER: My travelling dates are 04/02 and 04/04.

ASSISTANT: Ok, let me know your locations.

USER: My preferred airport codes are MCO to IAD.

ASSISTANT: Please hold on a moment.

USER: Ok.

ASSISTANT: Sorry, there is no direct flight for you on your route to book your ticket.

USER: No issues, thank you for your response.

ASSISTANT: Welcome Samantha Phillips, have a nice day.