You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I support you today?

USER: Rachel Campbell here. Can you please help me in booking a flight ticket from SFO to DCA?

ASSISTANT: Sure, please share me your planned journey dates?

USER: Sure, my travel dates are from 05/30 to 06/01.

ASSISTANT: Do you want any connection in between your flight journey?

USER: Yes, I need a connecting flight.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, sorry there is no flight available on your given journey data.

USER: That's ok, no problem. Thank you for the information.

ASSISTANT: Thank you for visiting us.