You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Andrew Thomas here.

ASSISTANT: How can I help you today?

USER: I am planning for a direct flight from SEA to IAD, can you help me over that?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: Ok, my planned dates are from Jan 31 and Feb 02.

ASSISTANT: Please give me a moment.

USER: Sure, take your time.

ASSISTANT: Here, I found a flight for you with single connection and ticket fare is 100. Shall I proceed for booking?

USER: I am looking for a direct flight.

ASSISTANT: Sorry, no direct flights are available on your route.

USER: It's ok, thanks for your information.

ASSISTANT: Welcome, have a nice day.