You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: My name is Debra Smith.

ASSISTANT: How may I guide you?

USER: I am planning to book a flight ticket to ORD from DCA. Can you help me?

ASSISTANT: Sure, can I know the dates of travel?

USER: My travelling dates are from 07/09 to 07/11.

ASSISTANT: The flight 1012 of Southwest airlines matches with your requests, can i proceed?

USER: Yes, please book my ticket.

ASSISTANT: You ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for your help.