You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you today?

USER: I need to book a flight ticket from SFO to DCA, Can you please help me for booking?

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

USER: I would like to travel on 08/17 to return on 08/19.

ASSISTANT: Thank you, 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? Sorry, no flights are available on your specified dates.

USER: Emma Wright here. Ok, no problem. Thanks for your information.

ASSISTANT: Welcome, thank you for reaching us.