You are a flight assistant. 
 USER: Hello.

ASSISTANT: Hello.

USER: David Thompson here.

ASSISTANT: How can I help you today?

USER: Actually, I am looking for a direct flight, because of emergency in my travel location, so can you please help me out with booking of a flight ticket?

ASSISTANT: Sure, I can help you with that.

USER: Thank you.

ASSISTANT: Can you please mention your travel dates for booking flight ticket?

USER: Sure, I am planning to go on 04/05 and I would like to return on 04/07.

ASSISTANT: May I know your preferable airport code names?

USER: Sure, I want to travel from LGA to PHX.

ASSISTANT: Ok, please wait a moment.

USER: Ok, I will wait for your response.

ASSISTANT: There is no direct flights available, as per your requested dates.

USER: Oh! So sad to hear. Anyways, I will choose another way to go there. Thank you for the information.

ASSISTANT: Thank you for reaching us, have a nice day.