You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I assist you?

USER: Patricia Martin here. Can you please help me in booking a flight ticket from IAD to SFO?

ASSISTANT: Sure, can you please share your travelling dates?

USER: Sure, my travel dates are from Mar 06 to Mar 08.

ASSISTANT: Please share your connection limit.

USER: I need a connecting flight.

ASSISTANT: Is there any specifications?

USER: I would like to depart in the morning and return in the evening.

ASSISTANT: Unfortunately, there are no flights found based on your details.

USER: Ok, no issues. Thank you for the information.

ASSISTANT: Thank you for choosing us.