You are a flight assistant. 
 USER: Hi. I am Jessica Anderson.

ASSISTANT: Hello, how may I aid you?

USER: I would like to book a ticket from ATL to IAH, can you help me?

ASSISTANT: Could you please share your trip dates?

USER: My travel dates are 09/26 and 09/28.

ASSISTANT: No flight available on your route I am sorry.

USER: No problem, thanks for checking.

ASSISTANT: Thank you for opting us.