You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I assist you?

USER: I am Lisa Martin.

ASSISTANT: HI Lisa.

USER: We are going to have a holiday vacation. I would like to book a flight ticket.

ASSISTANT: OK, when would you like to travel?

USER: I would like travel from GA-ATL on 10/10 to WA-SEA on 10/12.

ASSISTANT: Sorry Lisa, unfortunately there is no flight found based on your details.

USER: OK, Thank you.

ASSISTANT: Pleasure is mine, have a nice day.