You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you?

USER: I am Lisa Scott want to visit DFW, can you book a ticket from SEA?

ASSISTANT: Sure, can I have your journey dates please?

USER: Sure, my travelling dates will be 11/15 and 11/17.

ASSISTANT: Please hold on a moment, Lisa.

USER: Ok.

ASSISTANT: Lisa, no flights has been found on your journey dates.

USER: That's ok, thank you.

ASSISTANT: Thank you for choosing us.