You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you at this moment?

USER: I want to reserve my ticket from LGA to PHX to visit Phoenix, can you please help me in booking?

ASSISTANT: Sure, I am happy to help you with that. Can I have your travel dates please?

USER: Sure, my planned dates of journey are from May, 16 to May, 18.

ASSISTANT: Ok, please let me know your  preferable timings of your journey.

USER: I am ok with any travelling timing.

ASSISTANT: Do you have any other specifications?

USER: Yes, I want to fly in a direct flight.

ASSISTANT: Can I have your good name please?

USER: Sure, my name is Jennifer Roberts.

ASSISTANT: Sorry to inform you that no flight is available to you on your dates.

USER: Ok, no problem. Anyways, thank you for your service.

ASSISTANT: Thank you for choosing us, have a good day.