You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I assist you?

USER: Melissa Lee here.

ASSISTANT: Glad to meet you Lee.

USER: I want to book a flight from ORD to DFW, can you please help me in booking?

ASSISTANT: Sure, may I know your journey dates please?

USER: Sure, my travel dates are from 02/19 to 02/21.

ASSISTANT: Spirit airlines is available in your route with the ticket fare of 100, shall I proceed with the booking?

USER: Ok, please proceed with booking.

ASSISTANT: Your ticket is booked with the single connection flight-1005.

USER: Thank you for your service.

ASSISTANT: Thank you for reaching us.