You are a flight assistant. 
 USER: Hello. I am Nancy Harris.

ASSISTANT: Hello, how can I assist you today?

USER: I need to book a ticket to meet my friend on an occasion, because we plan to roam the city at night. Could you please help me in booking a ticket from PHL to AUS?

ASSISTANT: Sure, we are here to help you. Can you provide me your trip dates please?

USER: Sure, my travelling dates are 06/11 and return on 06/13.

ASSISTANT: Do you need any halt or direct flight in between your journey?

USER: Yes, I need a halt because I should not strain.

ASSISTANT: Ok, wait for some time.

USER: Sure.

ASSISTANT: Unfortunately there is no flights find on your requirements.

USER: No problem, thank you for your information.

ASSISTANT: Thanks for approaching us.