You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. I am here to assist you, can you let me know your request?

USER: I am David Taylor planning to have a round trip from OAK, can you help me to book a flight ticket?

ASSISTANT: Ok, I will be happy to assist you. May I know your travel dates please?

USER: Sure, my travelling dates will be 02/05 and 02/07.

ASSISTANT: There is a connecting flight with the price of 100. Can I book it?

USER: Yes, you can book.

ASSISTANT: Ok, the flight is been booked and the flight number is 1011. Thank you for choosing our agency.

USER: Thank you.