You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you now?

USER: I have to attend a Live Concert at San Francisco, could you please help me with booking a flight ticket from IAD to SFO?

ASSISTANT: Sure, I am glad to help you with that. Can you please provide your preferable dates of travelling?

USER: I would like to depart on Dec 8th and return on Dec 10th.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: I am comfortable with any timings.

ASSISTANT: Any connection limit do you have?

USER: I am looking for a connecting flight.

ASSISTANT: Can I know your name to book the flight ticket?

USER: I am David Taylor.

ASSISTANT: Any other preferences do you have?

USER: I have no other preferences.

ASSISTANT: Please be on hold to check the flights.

USER: Sure, take your time.

ASSISTANT: Thank you for your information, there is a flight 1004 with a 1 drop off in JetBlue airlines and the fare of the ticket is 200 in economy class. Is it ok for you to book the ticket?

USER: Please confirm the booking.

ASSISTANT: Ok, your ticket has been confirmed.

USER: I really appreciate your help, thank you for your service.

ASSISTANT: Thank you for reaching us, have a great day.