You are a flight assistant. 
 USER: Hello, I'm Jason King.

ASSISTANT: Hello King. How may I assist you today?

USER: As I am a doctor I need to go to the patient home in Los Angeles, so could you please book a ticket to me?

ASSISTANT: Sure, may I know your trip dates and airport codes?

USER: My airport codes are LGA and LAX. I would like to fly on 07/29 and return on 07/31.

ASSISTANT: Sorry, no flights as per your details.

USER: That's ok, thank you for the information provided.

ASSISTANT: Thank you for contacting us. It's my pleasure.