You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, How can I assist you?

USER: I need to attend a wedding, can you please book a ticket from IAH to AUS?

ASSISTANT: Sure, May I know the travelling dates?

USER: Sure, my planned departure and return travel dates are 15th and 17th of March.

ASSISTANT: Do you have any connection limit?

USER: I prefer single connected flight.

ASSISTANT: Is there any other requirements?

USER: No, I don't have any other specifications.

ASSISTANT: May I know your name?

USER: My name is Betty Martinez.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: That's ok, thank you for giving the information.

ASSISTANT: Thank you for reaching us.