You are a flight assistant. 
 USER: Hello,.

ASSISTANT: Hello.

USER: I am Jessica Harris.

ASSISTANT: How may I assist you at this moment?

USER: Can you please reserve a flight ticket from EWR to IAH?

ASSISTANT: Sure, will you please mention your preferable dates of travelling?

USER: My journey dates are, start on Jan 18th and arrival on Jan 20th.

ASSISTANT: Do you  have any connection limit?

USER: I need a connection in between journey.

ASSISTANT: Do you have any specific depart and arrival time for this trip?

USER: My return flight time should be in the afternoon.

ASSISTANT: Do you have any class preference?

USER: No.

ASSISTANT: Please be on hold to check the flights.

USER: Sure.

ASSISTANT: We are apologize that, there are no flights running towards your region with your requested dates of travelling.

USER: Ok, no problem. Thank you.

ASSISTANT: Thank you for approaching us, have a great day.