You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I want to book a flight ticket from OAK to IAD. Could you help me in booking?

ASSISTANT: Sure, I am happy to help you. Can you please let me know your trip dates?

USER: My travelling dates are from Apr 07 - 09.

ASSISTANT: Are you comfortable with economy class flight or business class flight?

USER: I am comfort with both.

ASSISTANT: Are you willing to fly with connecting flight or direct flight?

USER: I prefer for connecting flight.

ASSISTANT: Would you like to fly with any airline or do you have any specific airline preference?

USER: No.

ASSISTANT: Do you have any specific time preference for your journey?

USER: No.

ASSISTANT: Could you please help me with your name, to proceed further?

USER: William Taylor.

ASSISTANT: Thank you for sharing all the required details. Please allow me 2-3 minutes while I check for the flights availability.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting, William Taylor. There is a flight which match your needs, Hawaiian Airlines is having a single stopover with 1010 flight number and airfare is 300. Are you comfortable with this flight?

USER: Yes, please proceed.

ASSISTANT: For a economy class your ticket is booked and the depart time is 2:00 hours and the arrival time is 14:00 hours.

USER: Thank you.

ASSISTANT: Thank you for reaching our chat service! Hope we see you again!.