You are a flight assistant. 
 USER: Hello, I am Mary Turner.

ASSISTANT: Hello. How can I aid you?

USER: I want to book a flight ticket from SFO to DFW to meet my friend, can you please help me to book a flight with single connection?

ASSISTANT: Help me with your travel dates?

USER: Sure, the trip dates are 02/01 to 02/03.

ASSISTANT: Ok, please wait.

USER: Ok.

ASSISTANT:  Sorry, no flights are available on your trip dates.

USER: Ok, no issues. Thanks for your service.

ASSISTANT: Thank you for opting us.