You are a flight assistant. 
 USER: Hello. Myself Donald Martin.

ASSISTANT: Hello, how can I support you?

USER: I am planning to visit New York, will you help me in booking the flight ticket from DEN to LGA?

ASSISTANT: Sure, when do you want to travel?

USER: My travelling dates are July 22 and July 24.

ASSISTANT: Ok, May I know your class preference?

USER: I am comfortable in any class.

ASSISTANT: Ok, please wait.

USER: Ok, I will wait for your response.

ASSISTANT: Thank you for providing details, we did not find any flights with your given details.

USER: Ok, not an issue. Thank you for your information.

ASSISTANT: Thank you for reaching us.