You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you today?

USER: I am Gary Campbell.

ASSISTANT: Ok.

USER: I need to go Austin for my vacation holidays so please help me with flight ticket booking from Philadelphia.

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: Can you please provide your take off and landing airport codes?

USER: I would like to travel from PHL to AUS.

ASSISTANT: Let me know your connection limit.

USER: I am ok with connecting or direct flight.

ASSISTANT:  In which class would you like me to book your flight ticket?

USER: Actually I ok with any class. I do not have any specific class to travel.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: Sure, I have planned to travel on dates of May 06 and May 08.

ASSISTANT: Do you have any other requirements?

USER: Yes, I would like to depart in afternoon time.

ASSISTANT: Ok, please wait a moment, let me search a flight for you.

USER: Sure, take your time.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: Oh! It is sad to hear. Anyway, thank you for your time.

ASSISTANT: Thank you for choosing us.

USER: Most welcome.