You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. May I know your sweet name please?

USER: I am Anna Phillips I want to book a ticket from PHL to HOU?

ASSISTANT: Sure Anna, how long your vacation?

USER: Yes, my travelling dates are 09/28 to 09/30?

ASSISTANT: Sure, please wait for a minute.

USER: OK,sure.

ASSISTANT: Sorry Anna, I cannot find any flight with your details.

USER: OK,thank you.

ASSISTANT: It's my pleasure, thank you.