You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: Can you please help me with booking a flight ticket from DEN to IAH?

ASSISTANT: Sure, may I know your travelling dates?

USER: My travel dates are Apr 28 and 30.

ASSISTANT:  On which name shall I reserve flight ticket?

USER: My name is Cynthia Taylor.

ASSISTANT: Do you need any specifications?

USER: I would like to return at afternoon.

ASSISTANT: Please wait.

USER: Ok, make sure I need a connecting flight.

ASSISTANT: Sorry, there are no flights available on your journey dates due to bad weather forecast.

USER: Ok, no issues. Thank you.

ASSISTANT: Thank you for reaching our service.