You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Jeffrey Green.

ASSISTANT: How may I help you?

USER: Do you have any flight from DCA to CLT?

ASSISTANT: Ok, please provide your trip dates to go.

USER: My trip dates are 01/15 and 01/17.

ASSISTANT: There is a flight-1011 on Spirit airline, shall I proceed?

USER: You can proceed with this flight.

ASSISTANT: Ok, your ticket has been done.

USER: Thanks for your help.

ASSISTANT: Thanks for choosing us.