You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a flight ticket to enjoy beach festival at New York. Please book a direct flight.

ASSISTANT: Sure. Please let me know your airport codes.

USER: My journey codes are Origin code is Houstin TX- HOU and Dest code is New York, NY- LGA.

ASSISTANT: When are you willing to travel?

USER: My travelling dates are from 01/25 to 01/27.

ASSISTANT: Ok, may I know your name?

USER: I am Cynthia Johnson.

ASSISTANT: Thanks for giving your details. There are no flights available at this moment.

USER: ok, no issues. Thank you.

ASSISTANT: Thank you for choosing us.