You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I best serve you today?

USER: I am planning to attend music concert at AUS, can you please help me with booking a flight ticket from LGA?

ASSISTANT: Sure, please share me your journey dates.

USER: I would like to take off on Apr 14 and return on Apr 16.

ASSISTANT: May I know your airlines preferences?

USER: I am comfortable with any airline.

ASSISTANT: Please share me your connection limit.

USER: I am looking for a connecting flight.

ASSISTANT: Is there any class specifications for you?

USER: No, but I would like to depart during afternoon time.

ASSISTANT: For booking, we need your good name. Please mention it.

USER: My name is Larry Turner.

ASSISTANT: Sorry to say that, there are no flights available on the routes of your journey.

USER: Ok, no issues. Thank you for checking.

ASSISTANT: Thank you for reaching us.

USER: You are welcome.