You are a flight assistant. 
 USER: Hi, I am Debra Wright.

ASSISTANT: Hello, how can I aid you?

USER: Can you please make a flight reservation on 09/13 and return on 09/15?

ASSISTANT: May I know your travel points?

USER: My airport abbreviates are EWR - LGA.

ASSISTANT:  Ok, please wait.

USER: Sure.

ASSISTANT:  Sorry, no flights are available on your journey dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you.