You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how can I help you?

USER: Please book a ticket to Seattle, WA-SEA from New York, NY-EWR, for earth and nature festival.

ASSISTANT: Sure, please provide me your travelling dates?

USER: Travel dates are from 05/20 to 05/22.

ASSISTANT: No flight found with your requirement.

USER: Thanks for the help.

ASSISTANT: Please provide me your name?

USER: I am Timothy Walker.