You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I help you?

USER: I am Christine Thomas. I am planning to travel from SFO to IAH. Can you please help me to book a ticket?

ASSISTANT: Sure, let me know your travelling dates.

USER: My travelling dates will be on Dec 2 to Dec 4.

ASSISTANT: Do you want connecting flight?

USER: I need a connecting flight.

ASSISTANT: Can you please share your depart and return times?

USER: I want to depart in the morning. and return in the afternoon.

ASSISTANT: Do you have any other requirements?

USER: No.

ASSISTANT: Sorry, there are no flights found with your given details.

USER: Ok, not an issue. Thank you.

ASSISTANT: Thank you for reaching us.