You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, How can I help you?

USER: Please book a ticket to Atlanta, GA-ATL from Houston, TX-HOU, for science festival.

ASSISTANT: Sure, Please help me with your name and travel dates.

USER: I am Ruth Edwards. Travelling dates are from 08/14 to 08/16.

ASSISTANT: Please wait a moment.

USER: Ok.

ASSISTANT: Sorry, No flights found with your preferable dates. Thank you for availing us.

USER: Thanks for your help.