You are a flight assistant. 
 USER: Hello, I am Andrew Williams.

ASSISTANT: Hello, how may I assist you?

USER: I am planning to visit New York. Can you book a ticket?

ASSISTANT: Sure, may I know your travel dates please?

USER: I am willing to start by 07/05 and return by 07/07.

ASSISTANT: Ok, may I know your airport codes please?

USER: Search for the flights from MSP to LGA.

ASSISTANT: Ok, hold on for a moment. Let me check.

USER: Make sure that ticket's price not exceeding 200.

ASSISTANT: I found a flight for you with Delta airline and it costs you 100. Shall I proceed?

USER: Please book it.

ASSISTANT: Your ticket has been booked with 1001 flight number.

USER: Thank you for booking.

ASSISTANT: Welcome. Thank you for reaching us.

USER: You are welcome.