You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how can I aid you?

USER: I want to book a flight ticket to ORD, to submit my research record at university. Will you help me in this?

ASSISTANT: Sure, may I know your travelling dates?

USER: My departure is on May 20 and arrival is on May 22.

ASSISTANT: Ok, can you please provide your source airport code?

USER: LAS is my source airport code.

ASSISTANT: Is there any connection limit?

USER: Yes, I prefer a connecting flight.

ASSISTANT: May I know your name for further process?

USER: Charles Wilson is my name.

ASSISTANT: We found a connecting flight with JetBlue airlines in an economy class. Shall I proceed with the booking?

USER: Sure, you can confirm it.

ASSISTANT: Your ticket has been reserved with 1000 flight number.

USER: Thank you for your assistance.

ASSISTANT: Thanks for reaching us.