You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I am Cynthia Miller. I want to book a flight ticket from HOU to PHL to meet my parents.

ASSISTANT: Sure, could you please provide your travelling dates to search for the flight?

USER: Sure, my travelling dates are 04/04 and 04/06.

ASSISTANT: Do you have any requirements?

USER: Yes, I need a halt in between the journey.

ASSISTANT: I have found a direct flight from Frontier airlines, can I proceed?

USER: No, I need a connecting flight, do not proceed with booking.

ASSISTANT: Sorry, there is no flight running on your route.

USER: No problem, thank you for your help.

ASSISTANT: Welcome, have a good day.