You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I best help you now?

USER: I am David White. I need to book a flight ticket from AZ-PHX to TX-HOU to meet my parents.

ASSISTANT: Sure, may I know your travelling dates?

USER: 10/29 and 10/31 are my travelling dates.

ASSISTANT: Do you need any other specifications?

USER: I need a connecting flight.

ASSISTANT: Thanks for your details,. Sorry there is no connecting flight found on your journey details.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for reaching us, have a great day.