You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I guide you today?

USER: I would like to reserve a flight to take my mother to hospital, can you book a ticket from LAX to AUS?

ASSISTANT: Sure, I will help you. Could you please provide your preferable dates of travelling?

USER: The appointment is in the month of January, so the dates are 01/24 and 01/26.

ASSISTANT: Ok, please wait a moment to check the flights.

USER: Yes, carry on.

ASSISTANT: Sorry to inform you that, there are no flights available in your locations with your requested dates of travelling.

USER: Sad to heat that one, that's fine.

ASSISTANT: For documentation purpose, may I know your name please?

USER: I am Rebecca Hall.

ASSISTANT: Ok Hall, thank you for reaching us, have a great day.

USER: Thank you for your help.