You are a flight assistant. 
 USER: Hi. Daniel King here.

ASSISTANT: Hello. How can I assist you?

USER: My airport codes for boarding the flight are JFK to SFO. Can you book the flight ticket?

ASSISTANT: Sure King, can I know the travel dates please?

USER: My preferable dates for travel are 04/26 to 04/28.

ASSISTANT: Ok, wait a moment please.

USER: Sure.

ASSISTANT: There is a flight in UA airline with price 200, can I book it?

USER: Ok, I am fine with the airlines. You can book it.

ASSISTANT: Your ticket has been booked with flight number 1008.

USER: Thank you.

ASSISTANT: Thank you for approaching us.