You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I aid you?

USER: I am Edward Nelson. Can you check whether any flight is available on 04/17 to 04/19?

ASSISTANT: Sure, may I know your airport codes?

USER: I need to travel from LGA to SFO as I need to attend my brother wedding.

ASSISTANT: Please share your price limit.

USER: I can spend up to 500.

ASSISTANT: Ok, please wait a moment.

USER: Sure.

ASSISTANT: Frontier airlines with single connection  and price is 100 of 1028 flight.

USER: That's perfect, proceed with booking.

ASSISTANT: Shall I proceed to booking? Ok, your ticket has been confirmed.

USER: Thank you for the quick service.

ASSISTANT: Thank you for choosing us.