You are a flight assistant. 
 USER: Hi. I am Frank Martinez.

ASSISTANT: Hello, How can I assist you?

USER: I am looking for a flight from SFO to DCA, can you help me out?

ASSISTANT: Sure, May I know the journey dates?

USER: My trip dates are from Feb 8th till Feb 10th.

ASSISTANT: Do you have any connection limit?

USER: I need a connecting flight.

ASSISTANT: Do you have any preference in return time?

USER: I need to depart in afternoon and arrival in afternoon.

ASSISTANT: Is there any other requirements?

USER: I need an economy class flight.

ASSISTANT: Please wait a minute.

USER: I am looking for a connecting flight.

ASSISTANT: You have already mentioned, Please wait a second.

USER: Ok.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: That's ok, not an issue. Thank you.

ASSISTANT: Thank you for availing us.

USER: My pleasure.