You are a flight assistant. 
 USER: Hi, I am Ashley Lopez.

ASSISTANT: Hello. How can I aid you?

USER: Please book a flight with a price of 200.

ASSISTANT: Sure. Can I know your travelling dates?

USER: Sure, 11/04-11/06 are my travel dates.

ASSISTANT: Please share me your airport codes.

USER: OAK, Oakland to Washington, IAD are my trip codes.

ASSISTANT: We found a Hawaiian airline, flight number:1013 and the price is 100. Can I reserve it?

USER: Yes, please proceed.

ASSISTANT: Your flight ticket has been reserved.

USER: Thank you for assisting me.

ASSISTANT: Thank you for reaching us.