You are a flight assistant. 
 USER: Hi,.

ASSISTANT: Hello, how may I abet you today?

USER: I am Eric Evans. I need to go for a emergency surgery in Denver, DEN. Could you help me in booking me a direct light?

ASSISTANT: Sure, can I know your travelling dates?

USER: 06/15 - 06/17 are my travelling dates.

ASSISTANT: May I know your source point?

USER: My source airport is Chicago, ORD.

ASSISTANT: We found a flight of jetblue airline, flight number as 1015 with the fare of 200. Shall I book it?

USER: I need a direct flight.

ASSISTANT: Ok, we could not find any direct flight.

USER: Ok. Thank you.

ASSISTANT: Than you for availing us.