You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: Christopher Smith here. I want to attend a cousin's marriage at San Francisco. Can you please help me in booking a flight ticket from SFO to BOS?

ASSISTANT: May I know your preferable journey dates please?

USER: My journey date starts from 12/12 and I want a return ticket on 12/14.

ASSISTANT: Wait for a moment please.

USER: Ok, take your time.

ASSISTANT: Frontier airlines is available in your route with the ticket fare of 100, shall I proceed with the booking?

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket is booked with the flight-1001.

USER: Thank you for helping me in booking.

ASSISTANT: Thank you for reaching us.