You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I am John Thompson from Chicago ORD. I am planning to attend by cousin's marriage in San Francisco SFO, could you please help me in booking a flight ticket?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travel dates are 03/19 and 03/21.

ASSISTANT: Ok, wait for a minute.

USER: Sure.

ASSISTANT: Yes John, I found a flight-1006 with UA airlines, can I proceed?

USER: You can proceed.

ASSISTANT: Yes John, your ticket has been booked.

USER: Thanks for booking ticket.

ASSISTANT: Thank you for contacting  us, have a safe journey.