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

ASSISTANT: Hello, how may I be at your service today?

USER: Book a flight ticket to reach Los Angeles, CA - LAX from Philadelphia, PA - PHL.

ASSISTANT: Sure, can yo please forward your journey dates?

USER: 06/30 and 07/02 are my travelling dates.

ASSISTANT: Ok, please be on hold.

USER: OK.

ASSISTANT: Sorry there are no flights are available by the given details.

USER: Ok, no problem. Thanks for the information.

ASSISTANT: Thank you for opting us.