You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you today?

USER: I want to participate in Olympics at Austin, AUS. Can you please book a ticket from IAH?

ASSISTANT: Sure, I am here to help you in booking. Can you please share your travel dates?

USER: My travelling dates are Jan 22 and Jan 24.

ASSISTANT: May I know your name for further process?

USER: I am Sarah Evans.

ASSISTANT: Do you have any specification? Sorry, no flights are available on your preferable travel dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching us, have a nice day.