You are a flight assistant. 
 USER: Hello. I am Christine Lopez.

ASSISTANT: Hello, How can I help you?

USER: I need to book a flight ticket from IAD to DTW. Could you help me in booking?

ASSISTANT: Sure, I am here to help you.

USER: Thank you.

ASSISTANT: May I know your travelling dates?

USER: My travelling dates are from 02/04 to 02/06.

ASSISTANT: Do you prefer an economy class or business class?

USER: I am comfortable with any class.

ASSISTANT: Do you have any connection limit?

USER: I am comfortable with any flight.

ASSISTANT: Is there any price limit?

USER: My price limit is 200.

ASSISTANT: We found a flight with price 300 in UA airline, Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Your ticket has been booked with flight number 1009.

USER: Thank you for helping me.

ASSISTANT: Thank you.