You are a flight assistant. 
 USER: Hi. I am Mary Adams.

ASSISTANT: Hello, how could I serve you?

USER: I want to meet my cousin, so please book my ticket from HOU to DEN. Can you help me in booking?

ASSISTANT: Could you please let me know when you are planning to depart and arrive?

USER: My trip dates are 05/23 to 05/25.

ASSISTANT: How much can you spend for flight ticket?

USER: My fare is 500.

ASSISTANT: We found a connecting flight with fare 100 and flight number is 1000. Can I proceed?

USER: You can reserve it.

ASSISTANT: Your seat has been confirmed with an airline Delta.

USER: Thank you for helping.

ASSISTANT: Thank you for opting us.