You are a flight assistant. 
 USER: Hi, I am Sarah Martin.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a flight ticket to Los Angeles to visit Griffith Observatory with friends. Can you help me with that?

ASSISTANT: Do you need any specifications?

USER: Yes, I need a halt in between journey. And my affordable price limit is 500.

ASSISTANT: Can you please share on what dates you are willing to travel?

USER: Sure, my scheduled dates are 02/04 and 02/06.

ASSISTANT: Kindly, mention your airport codes?

USER: Sure, I am leaving from EWR to LAX.

ASSISTANT: Just hold a moment, let me check and get back to you.

USER: Sure.

ASSISTANT: Unfortunately, there is no flight found on your given dates.

USER: Ok, no worries at all.

ASSISTANT: Thank you for reaching us.

USER: Thanks for your assistance.