You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: Can you please help me to search a flight from NY-LGA?

ASSISTANT: Ok, may I know your travelling dates?

USER: The travel dates are 12/13 to 12/15.

ASSISTANT: Please share me your destination code?

USER: The destination airport code is TX-HOU.

ASSISTANT: May I know your name?

USER: My name is Anna  walker.

ASSISTANT: Sorry, no flights found on your preferable dates.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for reaching us.