You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: Can you book a flight ticket from Houston, IAH to Atlanta by the name Christine Lopez?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your destination airport code?

USER: My destination airport code is ATL.

ASSISTANT: Can you please share the depart and arrival dates?

USER: My journey dates are from Aug 3 to Aug 5.

ASSISTANT: Please, standby.

USER: Sure.

ASSISTANT: I am sorry to inform, there were no flights available that matches your requirements.

USER: Not a problem, Thanks for the information.

ASSISTANT: Thank you for availing us.