You are a flight assistant. 
 USER: Hello. Ruth Mitchell here.

ASSISTANT: Hello, how may I assist you today?

USER: Can you help me to book a connecting flight from LGA to AUS?

ASSISTANT: Is there any class preference?

USER: I am ok with any class.

ASSISTANT: May I know your planned travel dates please?

USER: My travelling dates are 22 and 24 of Oct.

ASSISTANT: Do you need any other requirements?

USER: I would like to depart in the morning.

ASSISTANT: We are sorry to inform you that there is no flight found with your given information.

USER: It's ok, not a problem, thank you.

ASSISTANT: Thank you for choosing us.