You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you today?

USER: Can you help me in booking from SFO to DCA, as there is a conference meeting to attend?

ASSISTANT: Sure, I am glad to help you. Kindly, share your planned dates.

USER: My trip dates are Aug 16 to Aug 18.

ASSISTANT: Ok, please share your connection limit.

USER: I need a connecting flight.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Do you have any other specifications?

USER: No.

ASSISTANT: To proceed further, we need your name.

USER: I am David Thompson.

ASSISTANT: Ok, please wait for a few minutes.

USER: Sure.

ASSISTANT: Thank you for waiting, no flights were found based on your given data.

USER: No issue, thank you.

ASSISTANT: Thank you for choosing us.