You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: i am Eric Williams, want to travel from DCA to BOS. Please help me.

ASSISTANT: Sure. On what dates you want me to make the reservation?

USER: My travel dates are from 12/16 to 12/18.

ASSISTANT: Please be on hold for sometime, as I can check a flight for your journey with the best airlines.

USER: Ok.

ASSISTANT: We found a Frontier airline, flight number:1004 and the price is 100.

USER: Please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you.

ASSISTANT: Thank you for approaching us.