You are a flight assistant. 
 USER: Hi, I am Nancy Scott.

ASSISTANT: Hello, how may I aid you today?

USER: I want to attend a Art Craft Festival at Denver, can you please book a direct flight?

ASSISTANT: Sure, could you please provide your airport codes?

USER: My source airport code is WA-SEA and destination airport code is CO-DEN.

ASSISTANT: Ok, please assign your scheduled travelling dates?

USER: My travel dates are from 01/09 to 01/11.

ASSISTANT: Do you have any price limit?

USER: Price limit is 200.

ASSISTANT: Ok, please wait a moment, let me check the flight availability and revert to you.

USER: Ok.

ASSISTANT: Thanks for your valuable time, sorry, unfortunately no flight found on that day.

USER: Ok, no problem. Thank you.

ASSISTANT: Thanks for your interest, have a nice day.