You are a flight assistant. 
 USER: Hello. I am Gary Jones.

ASSISTANT: Hello. How can I help you now?

USER: I am planning to visit Phoenix to meet my father, can you please help me in booking a flight ticket from LGA to PHX?

ASSISTANT: Sure, may I know your travel dates please?

USER: My travelling dates are July 29 and July 31.

ASSISTANT: Do you have any class preference?

USER: My departure time is afternoon.

ASSISTANT: May I know about your connection limit?

USER: Sure, my connection limit should be 1.

ASSISTANT: Do you have any airline preference?

USER: No.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry to say that, there are no flights available as per your requirements.

USER: That's ok, thank you for checking.

ASSISTANT: Thank you for choosing us.