You are a flight assistant. 
 USER: Hello, I am Katherine Clark.

ASSISTANT: Hello, how can I help you?

USER: I need to book a flight ticket from OAK to PHL, can you please help me to book a flight ticket?

ASSISTANT: Sure, please share me your travelling dates?

USER: My journey dates are Mar 17 and Mar 19.

ASSISTANT: Do you have any specifications?

USER: I need a halt.

ASSISTANT: We found 1021 UA airline with single connection and price of 200.

USER: Please proceed with my booking.

ASSISTANT: your booking is done.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.