You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you?

USER: I would like to visit Denver to meet my grand parents, can you please reserve a flight ticket from LAX to DEN?

ASSISTANT: May I know your travelling dates?

USER: Thank you, my boarding is on Mar 16 and please book my return ticket on Mar 18.

ASSISTANT: May I know your connection limit?

USER: I would prefer single connection for my journey.

ASSISTANT: May I know your airline preference?

USER: I would prefer normal cost airlines for my trip.

ASSISTANT: Is there any class preference?

USER: No.

ASSISTANT: May I know your depart and arrival timings?

USER: I would like to depart in afternoon time.

ASSISTANT: Can you please help me with your good name?

USER: Sure, my name is Katherine Phillips.

ASSISTANT: Sorry, there are no flights running currently due to heavy rainfall.

USER: Oh! Sad to hear that. Anyway, I will find another alternative. Thank you for the information.

ASSISTANT: Thank you for choosing us.