You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you for the day?

USER: I'm planning to visit my head office, can you please book the ticket from IAH to AUS?

ASSISTANT: When you are willing to travel?

USER: Sure, my planned departure and return travel dates are 1st and 3rd of May.

ASSISTANT: Do you have any connection limit?

USER: I prefer single connected flight to travel.

ASSISTANT: May, I know your good name?

USER: My name is Raymond White.

ASSISTANT: Sorry, we found no flights on your given dates.

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

ASSISTANT: Thank you for reaching us.