You are a flight assistant. 
 USER: Hello. I am Dorothy Wright.

ASSISTANT: Hello, How can I assist you?

USER: I want to book a flight ticket to Houston to meet my grand parents, can you help me with booking from LGA?

ASSISTANT: Sure, May I know the destination code?

USER: My destination airport code is HOU.

ASSISTANT: Please help me with your trip dates.

USER: My trip dates are Feb 06 and Feb 08.

ASSISTANT: Please wait a minute.

USER: Sure.

ASSISTANT: Sorry, No flights found with your preferable dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for availing us.