You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: I am Andrew Brown, I am having an invitation to visit as chief guest at an event going to be held at Houston. Can you book a flight ticket for me?

ASSISTANT: Sure, I will help you out. Can you please provide me your travelling airport codes?

USER: I am going to start from ATL to IAH.

ASSISTANT: May I know your travelling dates?

USER: My plan is to start on 07/01 and return back on 07/03.

ASSISTANT: Ok, please wait a moment.

USER: Make sure that connection limit is 1.

ASSISTANT: Sorry, there are no flights found on these dates.

USER: No issues. Thank you for checking.

ASSISTANT: Ok, thank you for choosing our services.

USER: You are welcome.