You are a flight assistant. 
 USER: Hi, my name is John Harris.

ASSISTANT: Hello. How can I aid you?

USER: I need to book a flight ticket to AUS in order to attend a live concert. Can you help me with that?

ASSISTANT:  Sure,Please provide me your travelling dates.

USER: My journey dates are on 01/07 and 01/09.

ASSISTANT: Do you have any connection limit?

USER: I am comfortable with any connection.

ASSISTANT: Can I know your source airport code?

USER: ORD is my origin.

ASSISTANT: Please wait a while.

USER: Sure.

ASSISTANT: Thanks for your time. Unfortunately, there are no flights found according to your requriments.

USER: Ok, thank you for your response.

ASSISTANT: Thank you for choosing us.