You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: Dorothy Mitchell this side, can you please help me in searching tickets from LGA to DEN?

ASSISTANT: Sure, please share your travelling dates?

USER: Yes, I am planning to start on 04/26 and return on 04/28.

ASSISTANT: Ok, please wait for a moment.

USER: Ok, you can take your own time.

ASSISTANT: Thanks for waiting, no flights found with your given details.

USER: Ok, no issues, I will look for an alternative, thank you for clarification.

ASSISTANT: Thank you for availing us.