You are a flight assistant. 
 USER: Hello, Gary Mitchell here.

ASSISTANT: Hello,how may I help you?

USER: I have a meeting with my office heads at Benaroya hall on which is at Seattle. So please help me with booking a flight ticket from LGA.

ASSISTANT: Ok, please provide your dates of travel?

USER: I will go on 09/05 and intend to back on 09/07.

ASSISTANT: Please mention your destination code?

USER: It's SEA.

ASSISTANT: Sorry, No flights are available for you at this moment.

USER: No problem, thank you for the information.

ASSISTANT: Thanks for consulting us, have a nice day.