You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: Brenda Scott here.

ASSISTANT: How may I assist you?

USER: Can you please check for the flights for my business trip to LGA? My source airport is IAH.

ASSISTANT: Sure, I am here to help you. When would you like to plan your journey?

USER: My journey dates are from Dec 26th to Dec 28th.

ASSISTANT: May I know your connection preference?

USER: I need a single connection between my journey.

ASSISTANT: Can you please specify your journey timings?

USER: My return time is in evening.

ASSISTANT: Please hold on a moment.

USER: Sure.

ASSISTANT: Brenda Scott, no flights has been found on your planned travel dates.

USER: Oh! That's sad to know. Anyways, thank you for checking.

ASSISTANT: Thank you for approaching us.

USER: Most welcome.