You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I want to book a flight ticket from SFO to DFW for attending a event. Could you please help me with booking a flight ticket?

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

USER: Sure, my travelling dates are May 11 and May 13.

ASSISTANT: May I know your connection limit?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Do you need any other preference?

USER: No.

ASSISTANT: Can I know your name please to proceed further?

USER: I am Katherine Gonzalez.

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

USER: No worries, thank you for the information.

ASSISTANT: Thanks for contacting us.