You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello, how may I aid you today?

USER: I am Frank Roberts. 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, can you please share your travelling dates?

USER: I want to travel on 02/28, and need to catch return flight on 03/01.

ASSISTANT: Sure, do you need any halt in between your journey?

USER: Yes, I need a halt.

ASSISTANT: Please specify your airport codes?

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

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Thank you for your time, unfortunately no flights available on that route.

USER: Ok, no issues.

ASSISTANT: Thank you for approaching us.

USER: Thanks for the information.