You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello, how may I assist you? I am glad to help you with your concern.

USER: I would like to meet my uncle as he is unwell, can you please book my flight ticket from EWR to DFW?

ASSISTANT: Sure, can you please let me know your trip dates?

USER: Thank you. I will depart on Sept 27th and return back on Sept 29th.

ASSISTANT: Would you like to fly with connecting flight or direct flight?

USER: I would like to fly with a connecting flight.

ASSISTANT: Are you comfortable with economy class, or do you have any class preference?

USER: I am fine with any class.

ASSISTANT: May I ask for your airline preference?

USER: Please check for the best airlines.

ASSISTANT: Are you looking for any time concern at the time of take off and for your return journey?

USER: I am comfortable at any time.

ASSISTANT: If you can help me with your name, I can check with the availability of flights.

USER: My name is Brian Gonzalez.

ASSISTANT: Thank you for sharing all the necessary details that are required for your journey. It may take sometime to check with that, may I request you to please be on hold? Are we still connected, Brian Gonzalez?

USER: Sure, I will wait for your reply.

ASSISTANT: Your patience is appreciated, Brian Gonzalez. Thank you for being on hold.

USER: You are welcome.

ASSISTANT: Sorry, there are no flights available for the mentioned dates.

USER: Not an issue. Anyway, thank you for checking.

ASSISTANT: Thank you for reaching us. Hope you reach our service again.