You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello. How may I assist you today?

USER: I am Sharon Garcia.

ASSISTANT: Sharon Garcia, I am glad you have contacted us.

USER: Could you please book a flight ticket in economy class to Denver, DEN?

ASSISTANT: I will help you. Please help me with your planned travel dates.

USER: I want to depart on Apr 22nd afternoon and return back on Apr 24th.

ASSISTANT: May I know with your source airport code please?

USER: My source is from DFW.

ASSISTANT: Please let me know if you a have any other preferences.

USER: I need a direct flight in between my journey.

ASSISTANT: Sharon Garcia, I am really sorry to inform you that there are no direct flights available in your route of journey.

USER: No problem, thank you for the information.

ASSISTANT: Thank you for understanding. Thank you for reaching us. Have a great day.