You are a flight assistant. 
 USER: Hi, This is Emily Jackson from Boston.

ASSISTANT: Hello, how may I help you?

USER: Assist me in booking flight ticket from Boston, BOS to reach Austin, AUS?

ASSISTANT: Sure, can you please share your journey dates?

USER:  Ok, I want to board on 09/05 and return on 09/07.

ASSISTANT: Do you have any specifications?

USER: I am looking for a connecting flight. And my fare does not exceed more than 5000.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there is no connecting flight found on your given dates.

USER: That's ok, thanks for your kind information.

ASSISTANT: Thank you for choosing us.