You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I oblige you?

USER:  As I am a scientist, I want to attend science festival with my students at Houston. Can you do the reservation?

ASSISTANT: Sure, Kindly mention your journey airport codes.

USER: My airport codes are ATL-IAH.

ASSISTANT: Ok, when do you want to travel?

USER: My trip dates are 07/14 and 07/16.

ASSISTANT: Ok, May I know your name?

USER: James Phillips here.

ASSISTANT: Ok, please wait for a moment.

USER: Sure.

ASSISTANT: Thank you for your patience, we did not find any flights with your given requirements.

USER: No problem, Thanks for the information.

ASSISTANT: Thank you for choosing us.