You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I abet you?

USER: As I am a scientist, I want to attend science festival with my students at Houston.

ASSISTANT: Ok.

USER: Can you do the reservation?

ASSISTANT: I am here to help you. Please help me with your airport codes?

USER: My airport codes are LGA-HOU.

ASSISTANT: May I know your trip dates?

USER: Dates are 07/23 and 07/25. I need direct flight.

ASSISTANT:  Sorry for the inconvenience, there is no flight found with your needs.

USER: No problem, I will check with another airline.

ASSISTANT: May I know your good name please?

USER: Laura Baker here.

ASSISTANT: Thank you for availing us, have a good day.

USER: Thank you.