You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Raymond Miller.

ASSISTANT: Raymond Miller, How can I be your helping hand today?

USER: I need to book a flight ticket from BOS to DEN, Can you please help me for booking?

ASSISTANT: Sure, I can help you in that.

USER: Thank you.

ASSISTANT: Can I have your travelling dates of your journey?

USER: I would like to travel on 03/22 to return on 03/24.

ASSISTANT: Please wait for a while.

USER: Sure.

ASSISTANT: Sorry, there are no flights at this moment for your journey, due to abnormal weather conditions.

USER: Ok, no problem. Thanks for your information.

ASSISTANT: Thanks for reaching us.