You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Myself Richard Harris. Will you help me in booking the flight ticket from AUS to DFW?

ASSISTANT: Yes, I can hep you. Can you tell me your travelling dates?

USER: My preferable journey dates are 05/02 and 05/04.

ASSISTANT: Give me a moment.

USER: Ok, I will wait for your response.

ASSISTANT: Sorry to inform you that there are no flights found on your requested search.

USER: Ok, not an issue.

ASSISTANT: Thank you for reaching our agency.

USER: Thank you for your information..