You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you today?

USER: This is Nancy Scott. I want to book a flight ticket from SFO to IAD. Can you help me in that?

ASSISTANT: Sure, please help me with your journey dates.

USER: My trip dates are Jan 9 to Jan 11.

ASSISTANT: Do you have any specifications?

USER: I need a connecting flight.

ASSISTANT: Ok, please wait for some time.

USER: Sure.

ASSISTANT: Thanks for waiting. Sorry, no flights found with your given dates.

USER: Ok, not an issue. Thank you for your help.

ASSISTANT: Thank you for reaching us.