You are a flight assistant. 
 USER: Hi.

ASSISTANT: Hello.

USER: I am Ashley Lopez.

ASSISTANT: How can I help you?

USER: I need your help in booking a ticket with direct flight to attend an emergency surgery.

ASSISTANT: Sure. May I know your source code?

USER: I would like to start from Dallas, DFW.

ASSISTANT: To proceed booking I need your travelling dates.

USER: Depart date is 11/04 and return will be on 11/06.

ASSISTANT: Do you have any price limit?

USER: It is 200 only.

ASSISTANT: Kindly, mention your destination code.

USER: I have to land at Minneapolis, MSP.

ASSISTANT: Please, wait for a moment.

USER: Sure.

ASSISTANT: Thanks for waiting, there is no direct flight available on your given requirements.

USER: It's ok. Thank you  for the response.

ASSISTANT: Thank you.