You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I help you out today?

USER: I am heading from Philadelphia, PA - PHL to attend a conference at San Francisco, CA - SFO. Can you help me with the booking?

ASSISTANT: Sure. I am glad to help you. Will you please mention the travelling dates?

USER: My dates of travel are 01/25 and 01/27.

ASSISTANT: Ok. Please share the origin point.

USER: I have already mentioned it above.

ASSISTANT: Ok. Please specify your name.

USER: My name is Laura Lee.

ASSISTANT: Thanks for sharing your journey details.

USER: Ok.

ASSISTANT: But no flights found on your routes. Thanks for availing us.

USER: That's ok, thank you.