You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I assist you?

USER: My name is Jerry Gonzalez, can you help me to book a flight ticket from IAD to SFO?

ASSISTANT: May I know your travel dates?

USER: Ok, please book for the dates July 24 and July 26 respectively.

ASSISTANT: Do yo have any preferences?

USER: I need a connecting flight, please check.

ASSISTANT: Sorry, we couldn't found any flight for you.

USER: Ok, not a problem. Thank you for assisting me.

ASSISTANT: Thank you for availing our services.