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

ASSISTANT: Hello, how can I help you?

USER: Could you please avail me a flight ticket from Philadelphia, PA - PHL to reach Las Vegas, NV- LAS?

ASSISTANT: Sure, please share me your travelling dates?

USER: My trip dates are 06/21 - 06/23.

ASSISTANT: Do you have any specifications?

USER: I can afford up to 500 only.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, there were no flights with your specifications.

USER: Not a problem, thank you for your information.

ASSISTANT: Thank you for reaching us.