You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Can you help me to reserve a flight ticket from HOU to PHL?

ASSISTANT: Sure, can you please mention your departure and arrival dates of your journey?

USER: My travelling dates are 25 to 27 of Apr.

ASSISTANT: Do you have any connection limit preference for this trip?

USER: I need a connecting flight.

ASSISTANT: Is there any other preferences that you would like to add before booking?

USER: No.

ASSISTANT: Can I know your name for booking your flight ticket?

USER: James Evans.

ASSISTANT: Thanks for sharing your details, we are unable to provide flight in between your journey routes.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for choosing us.