You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I help you today?

USER: I want to book a ticket from HOU to SFO to meet my sister.

ASSISTANT: Sure, can you share your trip dates?

USER: My journey dates are Mar 23 and Mar 25.

ASSISTANT: Do you have any connection limit?

USER: I want single connected flight.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: Are there any other specifications?

USER: My depart time is afternoon.

ASSISTANT: Please forward your name.

USER: I am Deborah Edwards.

ASSISTANT: Sorry, there are no flights found on your specified trip dates.

USER: Ok, Thank you for your help.

ASSISTANT: Thank you for reaching us.