You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Myself Janet Williams.

ASSISTANT: How can I assist you today?

USER: Will you help me in booking the flight ticket from PHL to AUS?

ASSISTANT: Sure, will you mention your travelling dates please?

USER: My travelling dates are 05/16 and 05/18.

ASSISTANT: Please give me a moment.

USER: Ok, I will wait for your response.

ASSISTANT: Thanks for waiting, there is no flights found under your preferable details.

USER: Ok, not an issue.

ASSISTANT: Thanks for reaching us, have a great day.

USER: Thank you for your information.