You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: I am Nancy Campbell.

ASSISTANT: How may I assist you today?

USER: Can you please book a flight ticket from CLT to HOU?

ASSISTANT: Sure, may I know your travelling dates, please?

USER: Thank you. I have planned my travel dates as Jan 21 and Jan 23.

ASSISTANT: Is there any particular timings in your departure and arrival?

USER: I would like to return in the evening time so please make sure that.

ASSISTANT: Do you need any specifications for this reservation?

USER: I am looking for single connecting flight so please check for it.

ASSISTANT: Please hold a moment, let me check best flight for your journey.

USER: Sure, take your time.

ASSISTANT: Sorry, due to bad weather forecast all flights has been cancelled on your route.

USER: Oh! It is sad to  hear. Anyway, thank you for your time.

ASSISTANT: Thank you for reaching our service.

USER: Most welcome.