You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to travel from IAD to DCA, can you please help me to book my ticket?

ASSISTANT: Sure. Please tell your name to proceed further.

USER: Linda Nelson here.

ASSISTANT: Linda, please tell me your travel dates.

USER: My travelling dates are 05/22 and 05/24.

ASSISTANT: I found a flight with Spirit airlines. Shall I book the ticket?

USER: ok, you can proceed.

ASSISTANT: Your ticket is confirmed.

USER: Thank you for your service.

ASSISTANT: You are welcome.