You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Joseph Garcia.

ASSISTANT: How may I guide you now?

USER: I would like to depart in the morning. Could you please help me with booking a flight ticket?

ASSISTANT: Joseph Garcia, may I know your travelling dates for this trip?

USER: Sure, my travelling dates are Apr 1 and Apr 3.

ASSISTANT: What are your location airport codes?

USER: Sure, my source is AUS and destination is DTW.

ASSISTANT: Do you need a connecting flight?

USER: Yes, I need a connecting flight.

ASSISTANT: Do you have any other preference?

USER: No, I do not have any other preference.

ASSISTANT: Sorry to say, there is no flight available for your journey.

USER: No worries, thank you for the information.

ASSISTANT: Thank you for choosing our services. Have a great day.