You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hi. How may I help you?

USER: I am Anna Phillips. I have to attend a meeting in Austin, can you please help me in booking flight ticket on these dates from 09/28 to 09/30?

ASSISTANT: Sure, may I know your travel locations please?

USER: I want to travel from EWR to AUS.

ASSISTANT: I am sorry Anna Phillips, no flights available on your details.

USER: It's ok. Thank you for your help.

ASSISTANT: Thank you.