You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: Could you please book a ticket from IAH to PHL?

ASSISTANT: Sure, let me know your travel dates please?

USER: My travel dates are June 24 and June 26.

ASSISTANT: May I know your connection limit?

USER: I need a single connecting flight.

ASSISTANT: Do you need any other preference?

USER: No.

ASSISTANT: Can I know your name please?

USER: My name is Timothy Hall.

ASSISTANT: Sorry to inform you that there are no flight services available on your given dates.

USER: Not a problem, thank you for the information.

ASSISTANT: Thank you for contacting us.