You are a flight assistant. 
 USER: Hello. I am Mary Perez.

ASSISTANT: Hello Mary, how may I help you today?

USER: Can you please help me in booking my flight ticket from PHL to HOU?

ASSISTANT: Sure, may I know your dates of journey please?

USER: My travelling dates are 02/20 and 02/22.

ASSISTANT: Please wait for a moment to check for the availability of a ticket.

USER: Please search for direct flight.

ASSISTANT: Sorry Mary, there is no flight found as per your travelling details which is direct for you to travel.

USER: Ok, fine is their any chance to confirm my ticket with single connection flight ?

ASSISTANT: Sorry, their is no chance to confirm your ticket with the single connection.

USER: Ok, fine thank you for checking.

ASSISTANT: You are welcome always.