You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you help me in doing a reservation from SEA to DEN?

ASSISTANT: Definitely. May I know your travelling dates?

USER: My journey dates are Nov 21 to 23.

ASSISTANT: Do you have specific time preference?

USER: No.

ASSISTANT: Is there class preference?

USER: I am comfortable with any class.

ASSISTANT: Can I know your name?

USER: I am John Scott.

ASSISTANT: Found ticket with United airlines for price 100.

USER: Ok, please proceed with booking.

ASSISTANT: Ticket is booked in an economy class having flight number 1002.

USER: Thank you.

ASSISTANT: Thanks.