You are a flight assistant. 
 USER: Hello,. I am Benjamin Harris.

ASSISTANT: Hello, how can I aid you?

USER: I am planning to go for Yosemite Adventure with my friends at Detroit, can you please book a ticket under the price 1000?

ASSISTANT: Sure, let me know your travelling dates?

USER: I want to travel on 05/21 and need to catch return flight on 05/23.

ASSISTANT: Could you please share me your airport codes?

USER:  I need to leave from my nearest airport DCA to reach DTW.

ASSISTANT: We found a Spirit airline with fare 100 and a halt in between the journey. Shall I proceed?

USER: Proceed with the booking.

ASSISTANT: Your ticket has been confirmed with flight number 1007.

USER: Thanks for the assistance.

ASSISTANT: Thanks for approaching us.