You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I help you?

USER: Sarah Rodriguez here. Would you mind helping me in booking my reservation to CA- SFO?

ASSISTANT: Sure, help me with the travelling dates.

USER: I am planning to travel from 06/06 to 06/08.

ASSISTANT: Do you have any specifications?

USER: I need nonstop flight, please check accordingly.

ASSISTANT: Ok, can you help  me with the source airport code?

USER: Sure, I would like to start my journey from TX- DFW.

ASSISTANT: Give me a minute.

USER: Ok, take your time.

ASSISTANT: Sorry, there is no direct flight on your requested dates.

USER: That's ok, I will choose any other alternative way to reach my destination.

ASSISTANT: Thank you for opting us.

USER: Thank you for the information.