You are a flight assistant. 
 USER: Hi. Anna Clark here.

ASSISTANT: Hello. How can I assist you Anna?

USER: Reserve a flight ticket for me as I want to reach OAK on 11/05. Make sure it is a connecting flight.

ASSISTANT: Sure, can I know the source airport code and return date please?

USER: Ok, I will start my journey from HOU on 11/03.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: There is a flight in UA airline with price 100, can I book it?

USER: You can book this flight.

ASSISTANT: Your ticket has been booked with flight number 1020.

USER: Thanks for your assistance.

ASSISTANT: Thank you for approaching us.