You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Jacob Wright. I want to book a flight ticket to Austin, AUS. Can you help me in booking from Philadelphia, PHL?

ASSISTANT: Sure, we are here to help you.

USER: Thank you.

ASSISTANT: Please, share your fare limit.

USER: I can bare up to 500.

ASSISTANT: Kindly, mention your depart and arrival dates.

USER: My travelling dates are from 07/27 to 07/29.

ASSISTANT: Thank you for sharing your journey details. Please, hold on.

USER: Sure.

ASSISTANT: No flights are available in your journey routes.

USER: Ok, No issues. Thank you.

ASSISTANT: Thank you for reaching us, have a good day.