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

ASSISTANT: Hello,. How can I serve you today?

USER: Can you serve me in booking a ticket with a connecting flight, to reach Boston?

ASSISTANT: Sure, we are glad to assist you.

USER: Thank you.

ASSISTANT: Please kindly mention me your origin airport code and destination airport code to check the best flight in your way.

USER: Boarding is from Chicago, ORD and landing is at Boston, BOS.

ASSISTANT: Can you share me your planned trip dates?

USER: Sure, I will start my journey on 11/28 and return on 11/30.

ASSISTANT: What price would you like to put on flight ticket?

USER: I can spend upto 5000, for my ticket.

ASSISTANT: Thanks for sharing your details. Give me a moment, I will check the available flights on your route.

USER: Ok, make it as soon as possible.

ASSISTANT: Thanks for your time, there are no flights available on your request dates.

USER: I have no choice to change my journey. So I have to travel on that confirmed dates only. I will choose another alternative.

ASSISTANT: Thank you for opting us.

USER: Thanks for your kind information.