You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Pamela Anderson.

ASSISTANT: How may I help you today?

USER:  I have to book a flight ticket  that I am unable to do, could you please help me in booking flight ticket on dates 02/17 and 02/19?

ASSISTANT: Sure, can you please forward your airport codes?

USER: My airport codes are SFO and DCA.

ASSISTANT: Do you have any other preferences?

USER: I need a connecting flight.

ASSISTANT: Unfortunately there are no flights found with your given information in our data.

USER:  That's ok, thank you for the response.

ASSISTANT: Thank you for choosing us.