You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Helen Turner.

ASSISTANT: How may I assist you?

USER: Can you help me in booking from IAH to IAD, as there is  a business meeting to attend?

ASSISTANT: Sure, I am here to help you out. May I know your travelling dates please?

USER: My trip dates are Oct 25 to Oct 27.

ASSISTANT: Do you require any stopovers in your journey?

USER: I need  a connecting flight.

ASSISTANT: How much you can spend for airfare?

USER: My fare is 200.

ASSISTANT: Ok, wait for some time I will check the availability of flights on your details and get back to you.

USER: Sure.

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

USER: No issue, thank you.

ASSISTANT: Thank you for reaching us.