You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you?

USER: I am Gary Miller. Can you help me to book a flight from IAD to AUS?

ASSISTANT: Sure, may I know your travel dates?

USER: My trip dates are 02/23 and 02/25.

ASSISTANT: Do you want any lay by in between your journey?

USER: I need a connecting flight in between by journey.

ASSISTANT: I am sorry, we could not found any flight on your required dates.

USER: Ok, no issues.

ASSISTANT: Thank you.

USER: Thank you for your help.