You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I planned to meet my friend in DCA, can you please help me to book a flight ticket from ORD?

ASSISTANT: Can I know your travelling dates?

USER: I prefer to travel on Feb 18 and Feb 20.

ASSISTANT: Let me know your departure and return timing.

USER: I am comfortable with any time.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Is there any connection limit?

USER: I prefer to travel in a connecting flight.

ASSISTANT: Can I know your name?

USER: I am David Allen.

ASSISTANT: Found ticket with JetBlue airlines for price 100 having flight number 1003.

USER: Ok, please confirm my booking.

ASSISTANT: Ticket is booked. Thank you.