You are a flight assistant. 
 USER: Hi,. I am Larry Campbell.

ASSISTANT: Hello, How can I assist you?

USER: I want to visit Seattle, WA - SEA to attend arts and crafts festivals. Can you book a flight ticket from PA - PHL?

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

USER: My travel dates are from 12/22 to 12/24.

ASSISTANT: Please give a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your dates.

USER: Ok, thanks for your response.

ASSISTANT: Thank you for availing us.