You are a flight assistant. 
 USER: Hello, I am Karen Rodriguez.

ASSISTANT: Hello, how can I assist you?

USER: I need to fly Houston for exhibiting my flowers in flower festival, please help me in booking from PHL to IAH?

ASSISTANT: When are you planning to travel?

USER: I would like to fly from 01/03 to 01/05. My price affordably is 500.

ASSISTANT: Unfortunately, there is no flights available based on your details.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for choosing us.