You are a flight assistant. 
 USER: Hi, I am Melissa Garcia.

ASSISTANT: Hello. How can I aid you?

USER: I need to book a flight on dates from 07/22 to 07/24 as I have an appointment with my client. Can you help me in finding a best flight on these dates?

ASSISTANT: Sure, I am here to help you. Can I know how much you can afford for this flight ticket?

USER: I can pay up to 1000.

ASSISTANT: Ok, please help me with your airport codes.

USER: I would like to board at OAK and land at DTW.

ASSISTANT: Please stand by.

USER: Ok.

ASSISTANT: Thank you for waiting, we found a flight with number 1005 and airline UA at a price of 100 with 1 connection. Shall I proceed?

USER: Yes, please proceed.

ASSISTANT: Sure, your booking is done.

USER: Thanks for your service.

ASSISTANT: Thank you for reaching us, have a nice day.