You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I serve you for today?

USER: Sharon Wright here. I want to attend my son's convocation ceremony, could you book my ticket from LAX to JFK?

ASSISTANT: Sure, I will help you in booking your flight ticket. Can you please provide your planned dates of journey?

USER: My itinerary dates are Apr 25 and Apr 27.

ASSISTANT: Please wait for a while to check the suitable flight for your journey.

USER: Sure, take your time.

ASSISTANT: We regret to inform you that there are no flights moving to your region with your planned dates of travelling.

USER: No problem, I will find an alternative way to travel.

ASSISTANT: Ok, thank you for reaching us. Hope we serves you better for the next time.

USER: Thank you.

ASSISTANT: You are welcome.