You are a flight assistant. 
 USER: Hello. I am Carolyn Smith.

ASSISTANT: Hello, how can I assist you?

USER: I need to book a flight ticket from AUS to PHL, Can you please help me for booking?

ASSISTANT: Sure, we are here to help you. Please, Mention your price limit.

USER: I can pay up to 1000.

ASSISTANT: What are your journey dates?

USER: I would like to travel on 12/22 to 12/24.

ASSISTANT: Give me a minute to check for the flight availability.

USER: Sure.

ASSISTANT: Thanks for your time. Unfortunately, there are no flights running on your route due to bad weather.

USER: Ok, no problem.

ASSISTANT: Thanks for reaching us.

USER: Thanks for your information.