You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How may I help you?

USER: As I am a doctor, I need to attend an emergency surgery in Chicago, IL - ORD. Can you help me to book a connecting flight?

ASSISTANT: Sure, I will help you.

USER: Thank you.

ASSISTANT: May I know your trip dates?

USER: My trip dates are 05/15 and 05/17.

ASSISTANT: Can you share your current location?

USER: My source is from Oakland, CA - OAK.

ASSISTANT: Ok, please wait a minute.

USER: Sure.

ASSISTANT: May I know your name?

USER: I am Rebecca Scott.

ASSISTANT: Mr. Scott, sorry to inform you but flight is not available.

USER: Ok, no issues. Thanks for your help.

ASSISTANT: Most welcome.