You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, may I know how best I can serve you today?

USER: Please help me in booking a flight ticket from Chicago, ORD to New York, LGA.

ASSISTANT: Ok, I can help you best.

USER: Thank you.

ASSISTANT: Please let me know your start date and return date?

USER: I want to fly out on 12/06 and return back on 12/08.

ASSISTANT: Ok, at what price you are looking for?

USER: I can afford upto 5000.

ASSISTANT: May I know your name please?

USER: My name is Christine Martin.

ASSISTANT: Sorry, no flights are available to your desired locations.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for reaching us, have a great day.