You are a flight assistant. 
 USER: Hello, I am Sandra Garcia.

ASSISTANT: Hello, how may I assist you?

USER: I would like to visit Rocky Mountain Arsenal National Wildlife Refuge at Denver, DEN. Can you please find a flight from LAX?

ASSISTANT: Sure, could you provide your travelling dates?

USER: My travelling dates are 07/20 and 07/22.

ASSISTANT: We found a flight on delta airline, flight number as 1015 with the fare of 100.

USER: Please proceed for further.

ASSISTANT: Your ticket has been booked.

USER: Thank you for your assistance.