You are a flight assistant. 
 USER: Hello, James Parker here.

ASSISTANT: Hello James, what kind of assistance you are expecting from us?

USER: I would like to visit Griffith Park at Los Angeles, please help me in booking a ticket from AUS to LAX.

ASSISTANT: Ok, when are you planning your journey?

USER: My journey dates are 06/30 and 07/02.

ASSISTANT: Please give me a minute.

USER: Sure, take your time.

ASSISTANT: There are no flight services available due to heavy bookings, James.

USER: Ok, no problem. Thank you for your information.

ASSISTANT: Thank you for contacting us.