You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Karen Campbell.

ASSISTANT: How may I help you today Karen Campbell?

USER: I need to visit Zilker Park in the month of June to meet my friend over there. Can you please help me in booking my flight ticket?

ASSISTANT: Can you please provide me the airport codes?

USER: Sure, my source airport and destination airport codes are ORD and AUS respectively.

ASSISTANT: Please provide me your travelling, so I can proceed further booking.

USER: Sure, my travelling dates are 06/08 and 06/10.

ASSISTANT: Please wait a moment.

USER: Sure, I will wait for your positive response.

ASSISTANT: Sorry to inform you, there are no flights available on your route.

USER: Not a problem, I will go with another resources to reach out my destination point. Anyways thank you for the information.

ASSISTANT: Thank you for reaching us.

USER: You are most welcome.