You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I am Stephanie Gonzalez. I want to book a ticket from New York to Las Vegas to attend my cousin's wedding. Could you help me to book a flight ticket?

ASSISTANT: Sure, May I know the journey codes?

USER: My journey codes are EWR and LAS.

ASSISTANT: Please help me with your travel dates.

USER: Travelling dates are on 07/06 and 07/08.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: Ok, not an issue. Thank you for response.

ASSISTANT: Thank you for reaching us.