You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Nancy Wilson here.

ASSISTANT: How can I help you?

USER: Can you please help me in booking a flight ticket from DCA to DFW?

ASSISTANT: Sure, I will help you to book a flight ticket. Can you please share me your travelling dates?

USER: I would like to travel on Nov 29 and return on Dec 1.

ASSISTANT: Please give me a moment.

USER: Sure.

ASSISTANT: Here, I found a flight for you with single connection. Shall I proceed for booking?

USER: Please proceed with the booking.

ASSISTANT: Your ticket is booked with flight number 1003 and airline is Spirit.

USER: Thank you for booking.

ASSISTANT: Welcome, have a safe flight. Thank you for choosing us.