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

ASSISTANT: Hello, how may I render you?

USER: I want to book a flight ticket on dates 07/11 and 07/13, so can you help me with booking please?

ASSISTANT: Sure, I am here to help you. Can I know your airport codes please?

USER: Yes, my airport codes are NY-LGA and GA-ATL.

ASSISTANT: Ok, wait a minute please.

USER: Ok, take your time.

ASSISTANT: Thank you for waiting. There is no flight found matching with your requirements.

USER: That's ok, thank you for the response.

ASSISTANT: Thanks for availing us.