You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Sharon Campbell.

ASSISTANT: How can I help you today?

USER: I want to attend my brother's wedding in New York.Can you help me to book a ticket from LAX to LGA?

ASSISTANT: Sure, I can help you in booking flight ticket. Can you please mention your travel dates for booking flight ticket?

USER: I would like to travel on 11/20 and 11/22.

ASSISTANT: Ok, please wait a moment, I will check flight availability.

USER: Sure, take your own time.

ASSISTANT: Sorry for the inconvenience, no flights available in this route.

USER: That's ok.

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

USER: Anyways, thank you for checking.

ASSISTANT: Welcome.