You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello, how may I aid you today?

USER: Can you help me in booking a direct flight to Houston, TX - HOU on the name of Janet Roberts?

ASSISTANT: Sure, may I know when you are planing to travel?

USER: I intend to fly on 09/11 and 09/13.

ASSISTANT: Ok, can you provide your airport codes?

USER: My source is PHL.

ASSISTANT: Ok, please wait a while.

USER: Sure.

ASSISTANT: Thanks for your time. There are no flights available at this moment matching your request.

USER: Thank you for your response.

ASSISTANT: Thank you for picking us.