You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Eric Harris.

ASSISTANT: How can I aid you at this moment?

USER: I want to visit Rocky Steps at Philadelphia, I want to book a ticket.

ASSISTANT: May I know your travelling dates?

USER: My trip dates are from 02/20 to 02/22.

ASSISTANT: Ok, may I know your travelling codes?

USER: My airport codes are from IAD to PHL.

ASSISTANT: As per your details here is a flight with price 100.

USER: Ok, please confirm my ticket.

ASSISTANT: Your ticket has been confirmed with Spirit airline and number is 1022.

USER: Thank you for your help.

ASSISTANT: You are welcome.