You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you for the day?

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

ASSISTANT: When you are willing to travel?

USER: Oct, 12 and Oct, 14 are my travel dates.

ASSISTANT: May, I know your good name?

USER: Jerry Brown here.

ASSISTANT: Do you have any connection limit?

USER: I would prefer single connection.

ASSISTANT: Do you have any other requirements?

USER: I need to return at afternoon time.

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

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

ASSISTANT: Thank you for reaching us.