You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you today?

USER: I am Helen Robinson. I am planning to travel from OAK to IAD, can you help in booking the flight ?

ASSISTANT: Sure, can you provide your preferred travel dates?

USER: My date of journey is on 06/13 and I will be back on 06/15.

ASSISTANT: Yes Helen, according to the travel dates you have provided there is a flight available with a connecting flight and airlines is AA. Do you want me to book it?

USER: Proceed for booking.

ASSISTANT: Ok Helen, your booking is confirmed successfully. Thank you for choosing our agency.

USER: Thank you for booking.

ASSISTANT: Your welcome. The flight number is 1012.