You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

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

ASSISTANT: Sure, I am glad to help you. Can you please share your travel dates?

USER: My planned travel dates are from Dec 07 to Dec 09.

ASSISTANT: May I know your name? Do you have any connection limit?

USER: Sure, myself Susan Evans. I need a flight with single connection limit.

ASSISTANT: Is there any specifications?

USER: I would like to book my ticket in economy class and my depart time should be morning.

ASSISTANT: Sorry, there are no flights found on your travel dates.

USER: Ok, no problem. Thank you for the information.

ASSISTANT: Thank you for choosing us.