You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I aid you for the day?

USER: Please book a ticket from Boston, MA-BOS to Seattle, WA-SEA, for arts and crafts festival.

ASSISTANT: Sure, may I know your name?

USER: I am Barbara Carter.

ASSISTANT: Can you please provide your dates of travel?

USER: I intend to travel from 04/21 to 04/23.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Sorry, there were no flights found from your source.

USER: Thanks for the help.

ASSISTANT: Thank you for contacting us, have a blissful day.