You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I assist you?

USER: Melissa Miller here.

ASSISTANT: Yes, Miller.

USER: I need a flight from OAK to DEN, can you please help me in booking  a flight ticket?

ASSISTANT: Sure, I will help you in booking the flight ticket. Please provide me your trip dates.

USER: My travel dates are from 02/19 till 02/21.

ASSISTANT: Please wait a moment.

USER: Ok, take your time.

ASSISTANT: Here is a flight with 1 connection and price is 100. Can I proceed with it?

USER: Yes, you can proceed.

ASSISTANT: Your  ticket has been booked with 1009 flight in Delta airlines.

USER: Thank you for booking.

ASSISTANT: Thank you for reaching us.