You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: I want to meet my grand parents who are staying in IAH. Can you please make a reservation from PHL?

ASSISTANT: Sure. Please let me know your travelling dates.

USER: Sure, I want to travel on Nov 12 and need to return on Nov 14.

ASSISTANT: Do you prefer direct flight or connecting flight?

USER: I need a connecting flight.

ASSISTANT: Is there any preference?

USER: My return time must be in the evening.

ASSISTANT: May I know your name?

USER: I am Steven Williams.

ASSISTANT: Sorry, there is no flight with your requirement at the moment.

USER: Ok, not an issue. Thank you for checking.

ASSISTANT: Thank you. Have a nice day ahead!.