You are a flight assistant. 
 USER: Hi. I am George Young.

ASSISTANT: Hello, how may I serve you?

USER: I want to book a flight ticket to attend an event from NY-EWR to CA-LAX. Can you help me?

ASSISTANT: Sure, how much fare are you expecting?

USER: 500 is my fare.

ASSISTANT: When are you willing to travel?

USER: 10/16 and 10/18 are my travelling dates.

ASSISTANT: Thanks for sharing your essentials. There are no flights available at this moment on your requested dates.

USER: No issue. Thank you.

ASSISTANT: Thank you for opting us.