You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Samantha Evans.

ASSISTANT: How may I assist you today?

USER: As a doctor, I have an emergency operation at Philadelphia, PA - PHL. Will you help me to book a direct flight for me?

ASSISTANT: Sure, I am mirthful to help you.

USER: Thanks.

ASSISTANT: On which dates you have planned to travel?

USER: I have planning to travel on 02/03 and return on 02/05.

ASSISTANT: Help me with your source point?

USER: My source point is Chicago, IL - ORD.

ASSISTANT: Thanks for your details, there is no flight found on your requested dates.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for availing us.