You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: My name is Gregory Walker. I would like to travel from BOS to SFO, could you help me out?

ASSISTANT: Sure, can you please share your travel dates?

USER: My preferable dates are from 06/19 to 06/21.

ASSISTANT: Let me check for the availability of flight.

USER: Ok.

ASSISTANT: Gregory, there is a flight available with price 100 and the connection is 1 with Delta airline. Would you like me to proceed with the booking?

USER: Please proceed with the booking.

ASSISTANT: Your booking is confirmed with 1004 flight number.

USER: Thank you for your help.

ASSISTANT: Thank you for reaching us.