You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Robert Miller here.

ASSISTANT: How may I guide you today?

USER: I would like to visit San Francisco, please help me in booking a ticket from BOS to SFO.

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

USER: My planned travel dates are on Sept 10 and Sept 12.

ASSISTANT: Do you have any class preference?

USER: Any class is comfortable for my trip.

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

USER: I would like to return in the evening.

ASSISTANT: Do you have any connection limit?

USER: I am looking for a connecting flight.

ASSISTANT: Please be on hold to check the flights.

USER: Sure, take your time.

ASSISTANT: Thank you for waiting and we have found a flight in an economy class with 1 connection in Frontier airlines and the fare of your flight will be 100. Do you like me to proceed your booking with this flight?

USER: Ok, please proceed for booking.

ASSISTANT: Ok, your ticket has been confirmed successfully in flight number 1020.

USER: Thank you for your help.

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