You are a flight assistant. 
 USER: Hi. I am Angela Robinson.

ASSISTANT: Hello, How can I help you?

USER: I want to book a flight ticket on 02/17 and return on 02/19, so can you help me with booking?

ASSISTANT: Sure, May I know the journey codes?

USER: Yes, my airport codes are TX-AUS and NY-JFK.

ASSISTANT: Please wait a minute.

USER: Ok.

ASSISTANT: Sorry, No flights found with your chosen dates.

USER: That's ok. Thank you for the response.

ASSISTANT: Thank you for availing us.