You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello,.

USER: I am Daniel Phillips.

ASSISTANT: How can I support you?

USER: I am going for a Grand Canyon Adventure at San Francisco so, can you avail me flight ticket?

ASSISTANT: Sure, please provide your trip dates?

USER: I want to travel on 08/31, and need to catch return flight on 09/02.

ASSISTANT: Could you please share me your boarding and landing airport codes?

USER:  I need to leave from my nearest airport LGA to reach SFO.

ASSISTANT: Is there any restriction on fare?

USER: Make sure to check a flight with in a price limit of 500.

ASSISTANT: Please wait for a second.

USER: Sure.

ASSISTANT: Thanks for your time, there is a direct flight from an AA airline. Shall I proceed to book?

USER: Ok, proceed with the booking.

ASSISTANT: Your ticket has been reserved with 1019 flight number.

USER: Thanks for the assistance.

ASSISTANT: Thanks for using our service.