You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how can I render you today?

USER: I am Pamela Wilson, want to travel from IAH to IAD. Please help me in booking my ticket.

ASSISTANT: Sure, we are perky to help you.

USER: Thank you.

ASSISTANT: Do you prefer any halt in between your journey?

USER: Yes, I need a single halt.

ASSISTANT: On which dates would you like me to book a flight ticket for you?

USER: My travelling dates are from 01/07 to 01/09.

ASSISTANT:  Ok, please wait a moment, let me search a flight for you.

USER: Sure.

ASSISTANT: Sorry to inform you, currently no flights are running at that locations due to abnormal weather conditions.

USER: It's ok, thank you for your help.

ASSISTANT: Thank you for choosing us.