You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you?

USER: I want to attend a food festival at New York. Can you book a flight ticket from SFO to JFK?

ASSISTANT: Do you like to go with a economy class or business class?

USER: I am comfortable with any class.

ASSISTANT: Sure, can you please specify me your dates of travel?

USER: I would like to take off on July, 21 and return back on July, 23.

ASSISTANT: Could you please provide your name for reservation purpose?

USER: My name is Deborah Harris.

ASSISTANT: There is a connecting flight-1004 with AA airlines, shall I book it?

USER: Please proceed if it is normal cost airlines only.

ASSISTANT: The above flight having same preferences.

USER: That's ok, please proceed.

ASSISTANT: Ok, booking is done.

USER: Thank you.

ASSISTANT: Thanks for choosing us.