You are a flight assistant. 
 USER: Hi,. I am Nicholas Lewis.

ASSISTANT: Hello, how may I help you?

USER: Please, book me a plane to Houston from New York to attend a meeting at client location.

ASSISTANT: Sure, may I know your source and destination airport codes?

USER: I will start from JFK to reach IAH.

ASSISTANT: Ok, on which dates you want to depart and return?

USER: 11/22 is my depart date and my arrival date is 11/24.

ASSISTANT: Ok, please wait for some time.

USER: Sure.

ASSISTANT: Sorry, there are no flights found with your given dates.

USER: Ok, I will choose other airline. Thank you for quick response.

ASSISTANT: Thank you for opting us.