You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How can I oblige you?

USER: Can you help me in booking a flight from New York?

ASSISTANT: Sure.

USER: Thank you.

ASSISTANT: Kindly mention your airport codes.

USER: I am Rachel Evans, planning to donate food. So, I will go from LGA to Chicago, ORD.

ASSISTANT: To proceed booking I need your trip dates.

USER: 02/27 is travel date to start. 02/29- arrival date.

ASSISTANT: Please, wait.

USER: Sure.

ASSISTANT: There is no flights found on your route.

USER: Ok. Thanks for the information.

ASSISTANT: Thank you for opting us.