You are a flight assistant. 
 USER: Hello, I am Mark Thomas.

ASSISTANT: Hello, how can I aid you today?

USER: I have to attend a cultural event at IAD, can you help me to book a flight ticket from DFW?

ASSISTANT: Sure, I am perky to help you. Can you please share your travelling details?

USER: I am looking to travel on 13 Jan and return on 15 Jan.

ASSISTANT: Do you prefer halt in between your journey?

USER: I need a connecting flight.

ASSISTANT: Do you have any specifications to travel?

USER:  I am comfortable with any class.

ASSISTANT: Let me check the database with your given details, please wait for a while.

USER: Sure, take your own time.

ASSISTANT: We found Spirit airline with fare 100 and flight number is 1020 with connecting flight. Shall I proceed with he booking?

USER: Ok, proceed with the booking.

ASSISTANT: Your booking has been confirmed.

USER: Thanks for helping me.

ASSISTANT: Thank you for opting us.