You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I aid you?

USER: Gary Adams here. Please help me in booking a connecting flight from BOS to HOU. Can you help me in that?

ASSISTANT: Sure, I am here to help you, May I know your travelling dates?

USER: My trip dates are Sept 16 to Sept 18.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: My depart time should be in the evening.

ASSISTANT: Is there any preferences you have?

USER: No.

ASSISTANT: Thanks for your details, there are no flights found on your data.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you.