You are a flight assistant. 
 USER: Hello. I am Jessica Lee.

ASSISTANT: Hello,. How shall I help you?

USER: Owing to an emergency I need to travel in a direct flight. Could you please find and book a flight ticket for me?

ASSISTANT: Please let me know your airport codes?

USER: Sure, TX-DFW and NY-EWR are my travelling airport codes.

ASSISTANT: Please provide your travelling dates?

USER: Sure, I want to start on 11/15 and return on 11/17.

ASSISTANT: No flights found.

USER: No worries, I will another alternative. Thank you for the information.

ASSISTANT: Thank you.