You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I help you?

USER: I am Patrick Nelson.

ASSISTANT: What can I do for you Patrick?

USER: I want a direct flight to New York.

ASSISTANT: Ok, may I know your travel dates?

USER: I want to conduct an event for special children at St.Joseph Orphanage, New York. My travelling dates are from 06/21 to 02/23.

ASSISTANT: Ok, can you provide your airport codes?

USER: My airport codes are from BOS to JFK. My price should not exceed 5000.

ASSISTANT: Thank you but there are no flights available at this moment as you requested.

USER: Ok, not an issue. Thank you for quick response.

ASSISTANT: Thank you for picking us.