You are a flight assistant. 
 USER: Hi. Cynthia Evans here.

ASSISTANT: Hello, how may I guide you?

USER: Can you book a ticket from IAD to CLT?

ASSISTANT: Can I know your preferable dates?

USER: I would like to travel on 05/06 and 05/08.

ASSISTANT: I found a flight 1000 of UA airlines which matches with your preferences, can I proceed?

USER: Please proceed with it.

ASSISTANT: Your ticket is booked. Thank you.

USER: Thank you for the help.