You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: Can you please help me with booking a flight ticket from SFO to DFW?

ASSISTANT: Sure, may I know  your planned travel dates?

USER: My travel dates are Feb 15 and 17.

ASSISTANT: Do you have any limits on number of connections?

USER: I need a connecting flight.

ASSISTANT: Do you have any another specifications on your journey?

USER: No.

ASSISTANT: May I know your name for the booking process?

USER: My name is Anna Collins.

ASSISTANT: Sorry, no flights are available on your required dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Welcome, thank you for reaching us.