You are a flight assistant. 
 USER: Hi. Mark Evans here.

ASSISTANT: Hello. How may I help you?

USER: Can you reserve a flight ticket to New York for my client visit?

ASSISTANT: Sure, please provide your nearest airport codes.

USER: My airport codes for boarding the flight are AUS to JFK. I need a connecting flight.

ASSISTANT: Can I have your journey dates please?

USER: I am giving you my journey dates that is from dates 12/24 to 12/26.

ASSISTANT: Please hold on a moment.

USER: Sure.

ASSISTANT: Mark, no flights has been found on your journey dates.

USER: Not a problem. Thank you.