You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Donald Phillips, want to travel from LGA to DEN. Can you please help me?

ASSISTANT: Sure, I am here to help you.

USER: Thanks.

ASSISTANT: Please share your travelling dates.

USER: My travel dates are from 06/01 to 06/03.

ASSISTANT: Do you need any specifications?

USER: No.

ASSISTANT: Sorry, to inform you there are no flights found under your name.

USER: It's ok, thank you.

ASSISTANT: Thank you for choosing us.