You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I aid you?

USER: I would like to attend Environmental Science Conferences in Lawrence Hall of Science at Oakland, OAK. Can you please help me in booking?

ASSISTANT: Sure, may I know your travelling dates?

USER: My dates of travel are from 07/26 to 07/28.

ASSISTANT: Can you please provide your source code?

USER: My boarding point is at Chicago, IL-ORD.

ASSISTANT: May I know your good name?

USER: I am Lisa Turner.

ASSISTANT: We found a flight with number 1026 and Delta as airline. Shall I go with booking/.

USER: You can proceed with booking.

ASSISTANT: Your ticket is booked.

USER: Thank you.

ASSISTANT: Thank you for availing us.