You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, How can I assist you?

USER: Can you please book a flight ticket from HOU to PHX?

ASSISTANT: Sure, May I know the journey dates?

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

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any return time preference?

USER: No, I am comfortable to travel at any time.

ASSISTANT: Is there any other requirements?

USER: I want a ticket in economy class.

ASSISTANT: May I know your name?

USER: My name is Dorothy Brown.

ASSISTANT: Please wait a minute.

USER: Ok.

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

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

ASSISTANT: Thank you for choosing us.