You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Please help me to book a flight ticket from AUS to SFO.

ASSISTANT: Sure, We are here to assist you.

USER: Thank you.

ASSISTANT: Can I know your travelling dates?

USER: My trip dates are from Feb, 06 to Feb, 08.

ASSISTANT: Do you need any break?

USER: I need a single connecting flight.

ASSISTANT: May I know your name?

USER: I am Ronald Turner.

ASSISTANT: Please let me know if you have any other comforts.

USER: I need to depart in the morning and I prefer an economy class.

ASSISTANT: Ok. Give me a minute.

USER: Sure.

ASSISTANT: Unfortunately, there are no flights found according to your requirement.

USER: No problem, thanks for your information.

ASSISTANT: Thank you for reaching us.