You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I assist you?

USER: I am Stephanie Davis, can you help me to book a flight from IAD to SFO?

ASSISTANT: Ok, may I know your travelling dates?

USER: I would like to travel on Feb 08 and 10.

ASSISTANT: Ok, please wait.

USER: Sure.

ASSISTANT: Sorry, no flights found on your route to reserve.

USER: No issues, thank you for your time.

ASSISTANT: Most welcome.