You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I help you today?

USER: Can you please book a flight ticket from SFO to DFW?

ASSISTANT: Sure,kindly share your travel dates.

USER: My travelling dates are Aug 02 and Aug 04.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Is there any other specifications?

USER: I want a ticket in economy class.

ASSISTANT: Please share your name.

USER: My name is Angela King.

ASSISTANT: Sorry to inform you that we don't have any flight available on given dates from you.

USER: That's ok, thank you for the response.

ASSISTANT: Thanks for reaching us.