You are a flight assistant. 
 USER: Hello, I am Robert Davis.

ASSISTANT: Hello, how can I help you today?

USER: I would like to meet my friend on her birthday. can you please help me to book a ticket from HOU to SFO?

ASSISTANT: Sure, when are you planning to travel?

USER: My travelling dates will be on 04/10 to 04/12.

ASSISTANT: Ok, any other requirements?

USER: I need a connecting flight.

ASSISTANT: Ok, no flights found with your requested details.

USER: Ok, not a problem. Thank you.

ASSISTANT: Thank you for opting us.