You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you today?

USER: I have a plan to spend my holidays at New York. I need you to book a flight ticket.

ASSISTANT: Sure, may I know your airport codes?

USER: PHX and LGA are the respective airport codes.

ASSISTANT: Please mention your travelling dates.

USER: August 14 and 16 are my planned travelling dates.

ASSISTANT: Do you have any connection limit?

USER: I need a direct flight.

ASSISTANT: Do you have any other specifications?

USER: I prefer to fly in a economy class.

ASSISTANT: Thanks for being waiting, We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: Ok, thank you.

ASSISTANT: May I know your name?

USER: Samantha Lopez here.

ASSISTANT: Thank you for reaching our service.