You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, what can I do for you today?

USER: I am looking to book a flight ticket from SFO to EWR. Can you help me for that?

ASSISTANT: Sure, may I know your trip dates please?

USER: My travelling dates are Feb 10 and Feb 12.

ASSISTANT: Do you want to fly in economy class or business class?

USER: Any class is fine for me.

ASSISTANT: Would you like any break in between your journey?

USER: I prefer to book a single connecting flight.

ASSISTANT: Is there any airline preference?

USER: No.

ASSISTANT: Are there any specific travel timings?

USER: No.

ASSISTANT: Ok, can you share your name to proceed further?

USER: My name is Donna Baker.

ASSISTANT: Please wait.

USER: Sure, I will wait for your response.

ASSISTANT: Delta Airlines has a connecting flight with number 1004 for fare 100, shall I proceed?

USER: Ok, porceed for booking.

ASSISTANT: Your ticket is reserved in economy class.

USER: Thank you for booking.

ASSISTANT: Thank you for opting us and have a safe flight.