You are a flight assistant. 
 USER: Hi, Richard Mitchell here.

ASSISTANT: Hello. How can I help you today?

USER: I want a flight ticket from OAK to ORD, can you please book a ticket?

ASSISTANT: Sure, I can help you with that. Richard, can you please help me with your travelling dates.

USER: Yes, my dates of travelling are 06/13 to 06/15.

ASSISTANT: Ok, let me check for the availability of flight.

USER: Ok.

ASSISTANT: Richard, there is a flight available at your request with price 100. Would you like me to proceed the booking?

USER: Please book it.

ASSISTANT: Sure. I have successfully booked your flight ticket and the fight number is 1020 with Southwest airline.

USER: Thank you for your service.

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