You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: I would like to book a ticket from HOU to PHL, can you please help me out?

ASSISTANT: Sure, I will help you. Can you please share your planned travel dates?

USER: I am travelling on these dates Nov 15th and 17th.

ASSISTANT: Can I have your name please?

USER: Jennifer Mitchell here.

ASSISTANT: Do you have any connection preference?

USER: I prefer business class. I need single connected flight.\.

ASSISTANT: Do you have any other specifications?

USER: I don't have any other preferences.

ASSISTANT: Jennifer Mitchell, no flights has been found on your specifications.

USER: Ok no problem, thank you for your services.

ASSISTANT: Thank you for choosing us.