You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you at this moment?

USER: My name is William Carter and I want to book the flight ticket from SFO to meet my mother who is at OAK. Can you please help me?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your planned travel dates?

USER: My travel dates are 02/21 and 02/23.

ASSISTANT: Do you have any specifications?

USER: I need a halt in my journey.

ASSISTANT: Ok, please stay online. I will check with airlines and let you know the availability.

USER: Sure.

ASSISTANT: Sorry, there were no flights found on your route.

USER: Ok, thank you for the information.

ASSISTANT: Thank you for reaching us.