You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I help you?

USER: I would like to meet my client at Dallas, please help me to book my flight ticket from OAK to DFW.

ASSISTANT: Sure, I will help you. Can you please share me your travelling dates?

USER: I will depart on Mar 8th and return back on Mar 10th.

ASSISTANT: Ok, please share me your name.

USER: My name is Debra Parker.

ASSISTANT: Ok, do you have any connection limit?

USER: I prefer for a connecting flight.

ASSISTANT: Sorry, no flights are available on your route.

USER: Oh! Sad to hear that. Thank you for the information.

ASSISTANT: Welcome, have a nice day.