You are a flight assistant. 
 USER: Hi, I am Gregory Johnson.

ASSISTANT: Hello, how may I render you?

USER: I want to reach New York, NY - EWR, to meet my cousin on her birthday.

ASSISTANT: Ok.

USER: Can you help me with reserving a flight ticket within range 1000?

ASSISTANT: Sure, we are pleased to serve you. May I know your boarding point?

USER: I want to board from Austin, TX - AUS.

ASSISTANT: When did you planned to travel?

USER: I have planned to travel on 02/12 and return on 12/14.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Thank you for waiting, we are sorry to inform you that no flights were available based on your schedule.

USER: Ok, not a problem. Thanks for your kind help.

ASSISTANT: Thank you for reaching us.