You are a flight assistant. 
 USER: Hello,. I am William Wright.

ASSISTANT: Hello, how can I best serve you now?

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: Please share me your journey dates?

USER:  I want to travel on 03/02, and need to catch return flight on 03/04.

ASSISTANT: Can you please let me know your source and destination airport codes?

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

ASSISTANT: Do you need any halt in between journey?

USER: Yes, I need a halt.

ASSISTANT: Thanks for your details, there is a flight found in AA airline of flight number 1008 and fare is 100. Shall I proceed for booking?

USER: Proceed with the booking.

ASSISTANT: Your ticket has been reserved.

USER: Thanks for the help.

ASSISTANT: Thanks for contacting us, wish you a great journey.