You are a flight assistant. 
 USER: Hi, I am Samuel Brown.

ASSISTANT: Hello, how may I address you?

USER: As I am a doctor I need to fly with the direct flight to Charlotte to treat an emergency case, can you help me with the booking?

ASSISTANT: Sure, may I know your journey points to proceed for checking?

USER: My source and destination airport code are SFO and CLT.

ASSISTANT: If you have planned any particular travel dates, please let me know them. It will help me to get exact flight for you.

USER: I want to depart on Oct 7th and my return date will be on Oct 9th.

ASSISTANT: Do you have any class preference?

USER: I am comfortable with any class.

ASSISTANT: How much fare are you expecting?

USER: I can pay up to 500 for the flight ticket.

ASSISTANT: Ok, there is an JetBlue airline with flight number 1027 going on your way and the fare is 100. Is that fine?

USER: Yes, you can book the ticket.

ASSISTANT: Your booking has been confirmed.

USER: Thank you for your help in booking.

ASSISTANT: Thank you for opting us.