You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you for today?

USER: Could you please help me to book a connecting flight to Austin?

ASSISTANT: I am happy to help you about your flight ticket booking. Can you please provide your planned dates of journey?

USER: Thank you. May 20th and 22nd are my travelling dates.

ASSISTANT: Can you please provide your source of journey?

USER: Sure, I would like to start my journey from JFK.

ASSISTANT: Do you need any connecting flight for your journey?

USER: I have already mentioned it above.

ASSISTANT: Do you need any other requirements for this trip?

USER: Yes, I would like to return  in the afternoon so that I can buy gifts to my family.

ASSISTANT: Can you please provide your name for reservation purpose?

USER: Sure, Charles Wilson here.

ASSISTANT: Sorry for this Charles Wilson, I am not able to find any of the flight which travels to your region as per your requirements.

USER: No issue, I will choose an other alternative to make my trip. Thank you for the information.

ASSISTANT: You are welcome, thank you for reaching us.