You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how can I aid you?

USER: I am Joseph King. Can you help me in booking my flight ticket from DFW to OAK?

ASSISTANT: Sure, can I have your trip dates please?

USER: 02/26 - 02/28 are my travel dates. I need  a connecting flight.

ASSISTANT: Thanks for the details. There were no flights available with your criteria.

USER: Ok, no issues. Thank you for assisting me.

ASSISTANT: Thank you for reaching us.