You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello. How can I aid you?

USER: Can you help me to book a flight ticket from LAX to DEN?

ASSISTANT: Sure, We are here to help you. Can I know your travelling dates?

USER: Ok, please can you help me to book a ticket for the dates May 1st and May 3rd respectively?

ASSISTANT: Do you need any break?

USER: Ok, please can you book a connecting flight?

ASSISTANT:  Is there any other requirements for this trip to met with, so that I can find a suitable flight for your journey?

USER: Ok, please check flight which depart during afternoon.

ASSISTANT: May I know your name?

USER: My name is Emily Taylor.

ASSISTANT: Please be on hold for sometime, as I can check a flight for your journey with the best airlines.

USER: Ok, I will wait for your response.

ASSISTANT:  We are unable to provide flight in between your journey routes due to some technical up-gradation at destination airport.

USER: That is ok, thank you for assisting me.

ASSISTANT: Thank you for reaching us.