You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you today?

USER: I am Frank Thompson. I want to book a ticket from Boston to Atlanta to attend birthday party, can you help me in booking?

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

USER: I am departing on Dec 19 and return on Dec 21.

ASSISTANT: Could you please help me with the airport codes?

USER: Departure airport is Boston BOS and willing to land in Atlanta ATL airport.

ASSISTANT: Do you have any class preference?

USER: I am ok with any class.

ASSISTANT: Frank Thompson, there is a flight available with price 100 and the connection is 1 with United Airlines. Would you like me to proceed with the booking?

USER: I am ok with UA airlines, please proceed for booking.

ASSISTANT: Your booking is confirmed with departure time 23:00 PM, arrival time 22:00 PM and the flight number is 1022.

USER: Thank you for your help.

ASSISTANT: You are welcome. Thank you for reaching us.