You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, do you need any help from us?

USER: Can you please make a reservation from OAK to PHL to attend a seminar in Philadelphia?

ASSISTANT: Sure, could you please share your departure and arrival day?

USER: My journey dates are, depart on Mar 10th and arrival on Mar 12th.

ASSISTANT: Ok, could I have your name please?

USER: My name is Brandon Rodriguez.

ASSISTANT: Ok, do you need direct or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Ok, do you have any other specifications?

USER: I don't have any other specifications.

ASSISTANT: Sorry, there is no flight on your requested travelling dates.

USER: Ok, no problem. Thank you.

ASSISTANT: You are welcome, have a great day.