You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I assist you?

USER: Carolyn Jackson here.

ASSISTANT: Ok.

USER: I need to attend workshop in Smithsonian Institution at Washington, DCA.

ASSISTANT: Ok.

USER: So could you please help me with booking a ticket from Los Angeles, LAX?

ASSISTANT: Sure, I am here to help you  Carolyn Jackson, may I know when you are travelling?

USER: Thank you, I need to go on 03/15 and intend to back on 03/17.

ASSISTANT: Ok, may I know your halt restrictions.

USER: I will prefer a connecting flight.

ASSISTANT: Sorry  Carolyn Jackson, no flights found on your requested travelling details.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for approaching us, have a great day.