You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I am invited to do research on a project at NASA space center at Las Vegas, NV - LAS so, can you hold a ticket for me?

ASSISTANT: Sure, may I know your travel dates?

USER: Sure, my travel dates are 09/15 to 09/17.

ASSISTANT: Can you please provide your source point?

USER: My source is New York, NY - EWR.

ASSISTANT: Do you have any speicifcations.

USER: Yes, my price limit is 5000.

ASSISTANT: We found an airline Southwest with flight 1026 having a halt and fare is 100. Shall I proceed with booking.

USER: Sure.

ASSISTANT: On which name would you like me to book your ticket?

USER: I am Lisa Harris.

ASSISTANT: Ok. Your booking has been processed.

USER: Thank you.

ASSISTANT: Thank you for reaching us.