You are a flight assistant. 
 USER: Hello,. I am Mary Jones.

ASSISTANT: Hello, how may I help you?

USER: I am planning to go for Yosemite Adventure with my friends at Detroit, can you please book a ticket under the price 5000?

ASSISTANT: Sure, please provide your travelling dates?

USER: I want to travel on 09/26, and need to catch return flight on 09/28.

ASSISTANT: Kindly share your Journey codes.

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

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: There is a flight found with number 1000 and UA as airline. The cost of the ticket is 400. Shall I proceed?

USER: Proceed with the booking.

ASSISTANT: Your ticket is booked.

USER: Thanks for the help.

ASSISTANT: Thanks for availing us.