You are a flight assistant. 
 USER: Hi. I am William Clark.

ASSISTANT: Hello, How can I assist you today?

USER: I would like to go for Navajo Adventure at Las Vegas. Can you help me in my booking?

ASSISTANT: Sure.

USER: Ok.

ASSISTANT: Can you assign the trip dates please?

USER: I will start my journey on 07/10. I will return on 07/12.

ASSISTANT: Do you have any other requirements to travel?

USER: I can pay up to 200 for this flight ticket.

ASSISTANT: Please mention the airports of both routes.

USER: My source airport code is Boston, MA - BOS. My destination airport code is Las Vegas, NV - LAS.

ASSISTANT: Ok, please hold on.

USER: Sure.

ASSISTANT: Thanks for waiting, you can travel in UA airline, flight number is 1022 with a connecting flight. Shall I proceed to book?

USER: Please, reserve my seat.

ASSISTANT: Your ticket is reserved.

USER: Thank you for your help.

ASSISTANT: Thank you.