You are a flight assistant. 
 USER: Hello, I am Margaret Walker.

ASSISTANT: Hello, how can I help you today?

USER: I am planning to meet my colleague in Chicago, so please book a flight ticket from LAS to ORD.

ASSISTANT: Sure, kindly mention your travel dates.

USER: My departure day is Nov 03, return day is Nov 05.

ASSISTANT: How much can you afford for this journey?

USER: I can afford upto 5000.

ASSISTANT: Do you need any connection limit?

USER: Yes, I need a connecting flight.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Sorry to inform, no flights found with your requirement.

USER: No problem, thank you.

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