You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: Myself Ryan Taylor.

ASSISTANT: How can I assist you today?

USER: I want to meet my client on his birthday. Can you please help me to book my flight ticket from AUS to LGA?

ASSISTANT: Sure, I can help you with that. May I know your preferable travel dates please?

USER: Sure, I will depart on 08/08 and return back on 08/10.

ASSISTANT: Ok, please wait for a while.

USER: Sure, I will wait.

ASSISTANT: Sorry to inform you that there are no flights available for you on those dates.

USER: Not an issue. Anyway, thank you for checking.

ASSISTANT: Thank you for choosing us.