You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello,.

USER: I am Patricia Collins.

ASSISTANT: How may I help you?

USER: Help me in booking a flight ticket to New York under a fare of 5000.

ASSISTANT: Ok. Please provide your journey dates?

USER: My journey dates are from 05/18 to 05/20.

ASSISTANT: Please let me know your travel codes?

USER: Sure, Austin, AUS and LGA are my airport codes.

ASSISTANT: Ticket can be booked with airline AA, for price 100. Flight number is 1004 with connections 1. Shall I book ticket?

USER: Ok, please book.

ASSISTANT: Ticket is booked. Thanks.